diff --git a/pyproject.toml b/pyproject.toml index b3697bd7e0..679f1d6fd9 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -37,7 +37,7 @@ quote-style = 'single' [tool.ruff.lint] explicit-preview-rules = true ignore = [ - 'E402', 'E722', 'E741', + 'E402', 'E741', 'UP012', 'UP030', 'UP038', 'C413', 'C420', 'PIE790', 'ISC003', 'RUF001', 'RUF002', 'RUF003', 'RUF005', 'RUF012', 'RUF013', 'RUF015', 'RUF031', 'RUF100', 'RUF059', # unused unpacked variable diff --git a/recipes/al_monitor.recipe b/recipes/al_monitor.recipe index d57e602275..94d62adb43 100644 --- a/recipes/al_monitor.recipe +++ b/recipes/al_monitor.recipe @@ -92,7 +92,7 @@ class AlMonitor(BasicNewsRecipe): try: self._p('process section ' + section + ', url: ' + url) soup = self.index_to_soup(url) - except: + except Exception: self._p('Unable to spider section') return [] @@ -175,7 +175,7 @@ class AlMonitor(BasicNewsRecipe): try: # eg: Posted September 17, 2014 dt = datetime.datetime.strptime(datestring, 'Posted %B %d, %Y') - except: + except Exception: dt = None if dt: diff --git a/recipes/am730.recipe b/recipes/am730.recipe index d5114f119e..4a45e1183b 100644 --- a/recipes/am730.recipe +++ b/recipes/am730.recipe @@ -69,7 +69,7 @@ class AM730(BasicNewsRecipe): if articles.index({'title':title,'url':href})>=0: # print('already added') continue # already added - except: + except Exception: pass articles.append({'title':title,'url':href}) diff --git a/recipes/birmingham_evening_mail.recipe b/recipes/birmingham_evening_mail.recipe index 8549dd2216..a6aec2102e 100644 --- a/recipes/birmingham_evening_mail.recipe +++ b/recipes/birmingham_evening_mail.recipe @@ -71,7 +71,7 @@ class AdvancedUserRecipe1306097511(BasicNewsRecipe): try: br.open_novisit(cov) cover_url = cov - except: + except Exception: cover_url = 'http://s.birminghammail.co.uk/skins/birminghammail/gfx/follow-media.jpg' return cover_url diff --git a/recipes/boston_globe_print_edition.recipe b/recipes/boston_globe_print_edition.recipe index 7a48a86b43..e82f55e21f 100644 --- a/recipes/boston_globe_print_edition.recipe +++ b/recipes/boston_globe_print_edition.recipe @@ -66,7 +66,7 @@ class BostonGlobePrint(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self, verify_ssl_certificates=False) try: br.open(cover) - except: + except Exception: index = 'https://en.kiosko.net/us/np/boston_globe.html' soup = self.index_to_soup(index) for image in soup.findAll('img', src=True): diff --git a/recipes/calgary_herald.recipe b/recipes/calgary_herald.recipe index eef67df749..99cb4f5bd1 100644 --- a/recipes/calgary_herald.recipe +++ b/recipes/calgary_herald.recipe @@ -151,14 +151,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -295,7 +295,7 @@ class CanWestPaper(BasicNewsRecipe): print('Section: ' + key + ': ' + self.url_prefix + keyurl) try: soup = self.index_to_soup(self.url_prefix + keyurl) - except: + except Exception: print('Section: ' + key + ' NOT FOUND') return ans.append(key) diff --git a/recipes/caravan_magazine.recipe b/recipes/caravan_magazine.recipe index 938fc7b393..f9ebae047d 100644 --- a/recipes/caravan_magazine.recipe +++ b/recipes/caravan_magazine.recipe @@ -118,7 +118,7 @@ class CaravanMagazine(BasicNewsRecipe): res = json.loads(res) self.log(safe_dict(res[0], 'result', 'data', 'json', 'message')) self.logged = True - except: + except Exception: self.log.warn('\n**Login failed, check your username and password\n') return br return br diff --git a/recipes/cnn.recipe b/recipes/cnn.recipe index b8a80131cc..7a19df2dd6 100644 --- a/recipes/cnn.recipe +++ b/recipes/cnn.recipe @@ -71,7 +71,7 @@ class CNN(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(masthead) - except: + except Exception: self.log('\nCover unavailable') masthead = None return masthead diff --git a/recipes/daily_mirror.recipe b/recipes/daily_mirror.recipe index 064aaa5d00..eaf80aebe4 100644 --- a/recipes/daily_mirror.recipe +++ b/recipes/daily_mirror.recipe @@ -92,7 +92,7 @@ class AdvancedUserRecipe1306061239(BasicNewsRecipe): try: br.open_novisit(cov2) cover_url = cov2 - except: + except Exception: cover_url = 'http://profile.ak.fbcdn.net/hprofile-ak-snc4/373019_6149699161_1710984811_n.jpg' return cover_url diff --git a/recipes/edmonton_journal.recipe b/recipes/edmonton_journal.recipe index f6a054a5e0..90490cea83 100644 --- a/recipes/edmonton_journal.recipe +++ b/recipes/edmonton_journal.recipe @@ -151,14 +151,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -295,7 +295,7 @@ class CanWestPaper(BasicNewsRecipe): print('Section: ' + key + ': ' + self.url_prefix + keyurl) try: soup = self.index_to_soup(self.url_prefix + keyurl) - except: + except Exception: print('Section: ' + key + ' NOT FOUND') return ans.append(key) diff --git a/recipes/el_pais.recipe b/recipes/el_pais.recipe index d1a929c506..4b32f85aa5 100644 --- a/recipes/el_pais.recipe +++ b/recipes/el_pais.recipe @@ -118,7 +118,7 @@ div.a_md_a {text-align: center; text-transform: uppercase; font-size: .8rem;} br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: self.log('\nCover unavailable') cover = None return cover diff --git a/recipes/elmundo.recipe b/recipes/elmundo.recipe index 21c7f832b0..64e43f9cd4 100644 --- a/recipes/elmundo.recipe +++ b/recipes/elmundo.recipe @@ -88,7 +88,7 @@ class ElMundo(BasicNewsRecipe): cover = 'http://img.kiosko.net/' + '/'.join([year, month, day]) + '/es/elmundo.750.jpg' try: self.browser.open(cover) - except: + except Exception: self.log('\nPortada no disponible') return cover @@ -101,7 +101,7 @@ class ElMundo(BasicNewsRecipe): response = self.browser.open(url) html = response.read() count = tries - except: + except Exception: print('Retrying download...') count += 1 if html is not None: diff --git a/recipes/esenja.recipe b/recipes/esenja.recipe index 5836913ab4..e7abab2725 100644 --- a/recipes/esenja.recipe +++ b/recipes/esenja.recipe @@ -114,7 +114,7 @@ class Esensja(BasicNewsRecipe): nr = r.findAll(attrs={'class': 'tn-link'})[-1] try: nr = int(nr.a.string) - except: + except Exception: return baseurl = soup.find(attrs={'property': 'og:url'})[ 'content'] + '&strona={0}' diff --git a/recipes/esensja_(rss).recipe b/recipes/esensja_(rss).recipe index 1e301e4822..c8336d2ac1 100644 --- a/recipes/esensja_(rss).recipe +++ b/recipes/esensja_(rss).recipe @@ -62,7 +62,7 @@ class EsensjaRSS(BasicNewsRecipe): nr = r.findAll(attrs={'class': 'tn-link'})[-1] try: nr = int(nr.a.string) - except: + except Exception: return baseurl = soup.find(attrs={'property': 'og:url'})[ 'content'] + '&strona={0}' diff --git a/recipes/expansion_spanish.recipe b/recipes/expansion_spanish.recipe index bc72f2637f..1ec8d7a614 100644 --- a/recipes/expansion_spanish.recipe +++ b/recipes/expansion_spanish.recipe @@ -112,7 +112,7 @@ class expansion_spanish(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: self.log('\nPortada no disponible') cover = 'http://www.aproahp.org/enlaces/images/diario_expansion.gif' return cover diff --git a/recipes/gazeta_pl_krakow.recipe b/recipes/gazeta_pl_krakow.recipe index cc3067dec3..289a05e17d 100644 --- a/recipes/gazeta_pl_krakow.recipe +++ b/recipes/gazeta_pl_krakow.recipe @@ -75,7 +75,7 @@ class gw_krakow(BasicNewsRecipe): try: baseurl = soup.find(name='meta', attrs={ 'property': 'og:url'})['content'] - except: + except Exception: return 1 link = tag.findAll('a')[-1] while link: diff --git a/recipes/gazeta_pl_warszawa.recipe b/recipes/gazeta_pl_warszawa.recipe index df3dcd3b40..a28f8c23da 100644 --- a/recipes/gazeta_pl_warszawa.recipe +++ b/recipes/gazeta_pl_warszawa.recipe @@ -74,7 +74,7 @@ class gw_wawa(BasicNewsRecipe): try: baseurl = soup.find(name='meta', attrs={ 'property': 'og:url'})['content'] - except: + except Exception: return 1 link = tag.findAll('a')[-1] while link: diff --git a/recipes/gry_online_pl.recipe b/recipes/gry_online_pl.recipe index d9a8771873..1f5e07024d 100644 --- a/recipes/gry_online_pl.recipe +++ b/recipes/gry_online_pl.recipe @@ -38,7 +38,7 @@ class GryOnlinePl(BasicNewsRecipe): try: soup2 = self.index_to_soup(finalurl) break - except: + except Exception: print('retrying in 0.5s') time.sleep(0.5) pagetext = soup2.find(attrs={'class': 'gc660'}) @@ -73,7 +73,7 @@ class GryOnlinePl(BasicNewsRecipe): try: soup2 = self.index_to_soup(finalurl) break - except: + except Exception: print('retrying in 0.5s') time.sleep(0.5) tag = soup2.find('div', attrs={'class': 'S018stronyr'}) diff --git a/recipes/il_messaggero.recipe b/recipes/il_messaggero.recipe index 26feeb0153..34de97fcd5 100644 --- a/recipes/il_messaggero.recipe +++ b/recipes/il_messaggero.recipe @@ -49,7 +49,7 @@ class IlMessaggero(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: self.log('\nCover unavailable') cover = 'http://www.ilmessaggero.it/img_tst/logomsgr.gif' diff --git a/recipes/inc.recipe b/recipes/inc.recipe index 501bff65e8..e1ec521426 100644 --- a/recipes/inc.recipe +++ b/recipes/inc.recipe @@ -41,7 +41,7 @@ class IncMagazineRecipe(BasicNewsRecipe): def has_login_name(form): try: form.find_control(name='email') - except: + except Exception: return False else: return True diff --git a/recipes/korben.recipe b/recipes/korben.recipe index aa1b0f3492..f26b17af97 100644 --- a/recipes/korben.recipe +++ b/recipes/korben.recipe @@ -16,7 +16,7 @@ class BasicUserRecipe1318619728(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(masthead) - except: + except Exception: self.log('\nCover unavailable') masthead = None return masthead diff --git a/recipes/la_republica.recipe b/recipes/la_republica.recipe index 9efeaeacbd..f616d7efa5 100644 --- a/recipes/la_republica.recipe +++ b/recipes/la_republica.recipe @@ -49,7 +49,7 @@ class LaRepubblica(BasicNewsRecipe): response = self.browser.open(url) html = response.read() count = 10 - except: + except Exception: print('Retrying download...') count += 1 self.temp_files.append(PersistentTemporaryFile('_fa.html')) diff --git a/recipes/latimes.recipe b/recipes/latimes.recipe index b3e2362071..3dcc727d6e 100644 --- a/recipes/latimes.recipe +++ b/recipes/latimes.recipe @@ -105,7 +105,7 @@ class LATimes(BasicNewsRecipe): self.log('Pattern: ', pattern) try: soup = self.index_to_soup(index) - except: + except Exception: self.log('Failed to download ', index) return [] if soup.main is not None: diff --git a/recipes/leggo_it.recipe b/recipes/leggo_it.recipe index 3a5393c192..1e80131e01 100644 --- a/recipes/leggo_it.recipe +++ b/recipes/leggo_it.recipe @@ -59,12 +59,12 @@ class LeggoIT(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: cover = 'http://www.leggo.it/' + year + month + day + '/jpeg/LEGGO_ROMA_3.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: self.log('\nCover unavailable') cover = 'http://www.leggo.it/img/logo-leggo2.gif' return cover diff --git a/recipes/lepoint.recipe b/recipes/lepoint.recipe index db8bfe6165..167b501e73 100644 --- a/recipes/lepoint.recipe +++ b/recipes/lepoint.recipe @@ -70,7 +70,7 @@ class lepoint(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(masthead) - except: + except Exception: self.log('\nCover unavailable') masthead = None return masthead diff --git a/recipes/lexpress.recipe b/recipes/lexpress.recipe index a8ba0a30b0..a015084f63 100644 --- a/recipes/lexpress.recipe +++ b/recipes/lexpress.recipe @@ -72,7 +72,7 @@ class lepoint(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(masthead) - except: + except Exception: self.log('\nCover unavailable') masthead = None return masthead diff --git a/recipes/montreal_gazette.recipe b/recipes/montreal_gazette.recipe index 5b9bc97f92..7dd5aef2fe 100644 --- a/recipes/montreal_gazette.recipe +++ b/recipes/montreal_gazette.recipe @@ -151,14 +151,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -295,7 +295,7 @@ class CanWestPaper(BasicNewsRecipe): print('Section: ' + key + ': ' + self.url_prefix + keyurl) try: soup = self.index_to_soup(self.url_prefix + keyurl) - except: + except Exception: print('Section: ' + key + ' NOT FOUND') return ans.append(key) diff --git a/recipes/nature.recipe b/recipes/nature.recipe index 1484c44903..6fdabf47f3 100644 --- a/recipes/nature.recipe +++ b/recipes/nature.recipe @@ -57,7 +57,7 @@ class Nature(BasicNewsRecipe): )['src'] try: self.cover_url = re.sub(r'\bw\d+\b', 'w1000', self.cover_url) # enlarge cover size resolution - except: + except Exception: ''' failed, img src might have changed, use default width 200 ''' diff --git a/recipes/newrepublicmag.recipe b/recipes/newrepublicmag.recipe index 621944570c..191db2fe62 100644 --- a/recipes/newrepublicmag.recipe +++ b/recipes/newrepublicmag.recipe @@ -236,7 +236,7 @@ fragment ArticlePageFields on Article { ) img['src'] = img_src del img['data-serialized'] - except: + except Exception: pass return f''' diff --git a/recipes/nikkei_news.recipe b/recipes/nikkei_news.recipe index 7c4f02cfb6..0c19296168 100644 --- a/recipes/nikkei_news.recipe +++ b/recipes/nikkei_news.recipe @@ -100,6 +100,6 @@ class NikkeiNet_paper_subscription(BasicNewsRecipe): [self.tag_to_string(elm).strip() for elm in elms]) elm_text = unicodedata.normalize('NFKC', elm_text) article.summary = article.text_summary = elm_text - except: + except Exception: self.log('Error: Failed to get article summary.') return diff --git a/recipes/observer_gb.recipe b/recipes/observer_gb.recipe index 7a844061de..b53a4fe1e9 100644 --- a/recipes/observer_gb.recipe +++ b/recipes/observer_gb.recipe @@ -144,7 +144,7 @@ class Guardian(BasicNewsRecipe): for title, href in self.find_sections(): feeds.append((title, list(self.find_articles(href)))) return feeds - except: + except Exception: raise NotImplementedError def postprocess_html(self, soup, first): diff --git a/recipes/ottawa_citizen.recipe b/recipes/ottawa_citizen.recipe index b3b35e4155..efe993007b 100644 --- a/recipes/ottawa_citizen.recipe +++ b/recipes/ottawa_citizen.recipe @@ -151,14 +151,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -295,7 +295,7 @@ class CanWestPaper(BasicNewsRecipe): print('Section: ' + key + ': ' + self.url_prefix + keyurl) try: soup = self.index_to_soup(self.url_prefix + keyurl) - except: + except Exception: print('Section: ' + key + ' NOT FOUND') return ans.append(key) diff --git a/recipes/pagina12.recipe b/recipes/pagina12.recipe index a91d2871fb..aae82dea6b 100644 --- a/recipes/pagina12.recipe +++ b/recipes/pagina12.recipe @@ -110,7 +110,7 @@ class Pagina12(BasicNewsRecipe): tfile.close() self.temp_files.append(tfile) result = tfile.name - except: + except Exception: self.info('Retrying download...') count += 1 return result diff --git a/recipes/people_daily.recipe b/recipes/people_daily.recipe index e03f10a52d..528370a048 100644 --- a/recipes/people_daily.recipe +++ b/recipes/people_daily.recipe @@ -133,7 +133,7 @@ class AdvancedUserRecipe1277129332(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: self.log('\nCover unavailable: ' + cover) cover = None return cover diff --git a/recipes/readitlater.recipe b/recipes/readitlater.recipe index 1c99c8b367..6b9f731ee3 100644 --- a/recipes/readitlater.recipe +++ b/recipes/readitlater.recipe @@ -161,7 +161,7 @@ class Pocket(BasicNewsRecipe): img_data = calibre_cover2(title, date, time) cover_file.write(img_data) cover_file.flush() - except: + except Exception: self.log.exception('Failed to generate default cover') return False return True diff --git a/recipes/regina_leader_post.recipe b/recipes/regina_leader_post.recipe index e176bf8b9e..badc8fe421 100644 --- a/recipes/regina_leader_post.recipe +++ b/recipes/regina_leader_post.recipe @@ -110,14 +110,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break diff --git a/recipes/respekt_magazine.recipe b/recipes/respekt_magazine.recipe index 28faad637a..9197bec5c2 100644 --- a/recipes/respekt_magazine.recipe +++ b/recipes/respekt_magazine.recipe @@ -145,7 +145,7 @@ class respektRecipe(BasicNewsRecipe): t = root.xpath("//span[@class='post-author-name']")[0] t.text = ('Autor: ' + t.text + ' ') root.xpath("//div[@class='authorship-names']")[0].append(E.span(article_length)) - except: + except Exception: pass # Make images visible pictures = root.xpath('//picture') @@ -169,6 +169,6 @@ class respektRecipe(BasicNewsRecipe): e = E.h2({'class':'post-subtitle'}) e.text = o.text o.getparent().replace(o,e) - except: + except Exception: pass return BeautifulSoup(lxml.etree.tostring(root,encoding='unicode')) diff --git a/recipes/saskatoon_star_phoenix.recipe b/recipes/saskatoon_star_phoenix.recipe index 1d580ca01c..7fa09eaf7b 100644 --- a/recipes/saskatoon_star_phoenix.recipe +++ b/recipes/saskatoon_star_phoenix.recipe @@ -110,14 +110,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break diff --git a/recipes/the_sun.recipe b/recipes/the_sun.recipe index 0382fb25e7..5724ef970e 100644 --- a/recipes/the_sun.recipe +++ b/recipes/the_sun.recipe @@ -61,7 +61,7 @@ class AdvancedUserRecipe1325006965(BasicNewsRecipe): try: br.open_novisit( 'http://www.thepaperboy.com/frontpages/current/The_Sun_newspaper_front_page.jpg') - except: + except Exception: cover_url = random.choice([ 'http://img.thesun.co.uk/multimedia/archive/00905/errorpage6_677961a_905507a.jpg', 'http://img.thesun.co.uk/multimedia/archive/00905/errorpage7_677962a_905505a.jpg', 'http://img.thesun.co.uk/multimedia/archive/00905/errorpage5_677960a_905512a.jpg', 'http://img.thesun.co.uk/multimedia/archive/00905/errorpage2_677957a_905502a.jpg', 'http://img.thesun.co.uk/multimedia/archive/00905/errorpage3_677958a_905503a.jpg' # noqa: E501 ]) diff --git a/recipes/theeconomictimes_india_print_edition.recipe b/recipes/theeconomictimes_india_print_edition.recipe index 34da739c6c..1a3b3f70d9 100644 --- a/recipes/theeconomictimes_india_print_edition.recipe +++ b/recipes/theeconomictimes_india_print_edition.recipe @@ -39,7 +39,7 @@ class TheEconomicTimes(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: self.log('\nCover unavailable') cover = None return cover diff --git a/recipes/thenewcriterion.recipe b/recipes/thenewcriterion.recipe index 732d1ecac7..08f6e8e111 100644 --- a/recipes/thenewcriterion.recipe +++ b/recipes/thenewcriterion.recipe @@ -111,7 +111,7 @@ class TheNewCriterion(BasicNewsRecipe): tfile.close() self.temp_files.append(tfile) result = tfile.name - except: + except Exception: print('Retrying download...') count += 1 return result diff --git a/recipes/vancouver_province.recipe b/recipes/vancouver_province.recipe index 0644c70dda..deb46aa06f 100644 --- a/recipes/vancouver_province.recipe +++ b/recipes/vancouver_province.recipe @@ -151,14 +151,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -308,7 +308,7 @@ class CanWestPaper(BasicNewsRecipe): print('Section: ' + key + ': ' + self.url_prefix + keyurl) try: soup = self.index_to_soup(self.url_prefix + keyurl) - except: + except Exception: print('Section: ' + key + ' NOT FOUND') return ans.append(key) diff --git a/recipes/vancouver_sun.recipe b/recipes/vancouver_sun.recipe index 603ada2e93..9b78380d83 100644 --- a/recipes/vancouver_sun.recipe +++ b/recipes/vancouver_sun.recipe @@ -152,14 +152,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -296,7 +296,7 @@ class CanWestPaper(BasicNewsRecipe): print('Section: ' + key + ': ' + self.url_prefix + keyurl) try: soup = self.index_to_soup(self.url_prefix + keyurl) - except: + except Exception: print('Section: ' + key + ' NOT FOUND') return ans.append(key) diff --git a/recipes/vic_times.recipe b/recipes/vic_times.recipe index 113086da9c..c5d2e76ca8 100644 --- a/recipes/vic_times.recipe +++ b/recipes/vic_times.recipe @@ -114,14 +114,14 @@ class TimesColonist(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break @@ -235,7 +235,7 @@ class TimesColonist(BasicNewsRecipe): print('Add section url=' + self.url_prefix + '/' + securl + '\n\r') try: soup = self.index_to_soup(self.url_prefix + '/' + securl) - except: + except Exception: return ans mainsoup = soup.find( 'div', attrs={'class': re.compile(r'main.content')}) diff --git a/recipes/windsor_star.recipe b/recipes/windsor_star.recipe index 24c041f9c3..d33d75b58f 100644 --- a/recipes/windsor_star.recipe +++ b/recipes/windsor_star.recipe @@ -110,14 +110,14 @@ class CanWestPaper(BasicNewsRecipe): daysback = 1 try: br.open(cover) - except: + except Exception: while daysback < 7: cover = 'http://webmedia.newseum.org/newseum-multimedia/dfp/jpg' + \ str((date.today() - timedelta(days=daysback)).day) + '/lg/' + self.fp_tag + '.jpg' br = BasicNewsRecipe.get_browser(self) try: br.open(cover) - except: + except Exception: daysback = daysback + 1 continue break diff --git a/recipes/zdnet.fr.recipe b/recipes/zdnet.fr.recipe index 00c83323e4..bd9b027121 100644 --- a/recipes/zdnet.fr.recipe +++ b/recipes/zdnet.fr.recipe @@ -61,7 +61,7 @@ class zdnet(BasicNewsRecipe): br = BasicNewsRecipe.get_browser(self) try: br.open(masthead) - except: + except Exception: self.log('\nCover unavailable') masthead = None return masthead diff --git a/recipes/zeitde_sub.recipe b/recipes/zeitde_sub.recipe index bb36ab6640..e7f46b8d9d 100644 --- a/recipes/zeitde_sub.recipe +++ b/recipes/zeitde_sub.recipe @@ -285,13 +285,13 @@ class ZeitEPUBAbo(BasicNewsRecipe): save_cover_data_to(cdata, cpath) cover_url = cpath - except: + except Exception: self.log.warning('Trying low-res cover') try: inhalt = self.index_to_soup('http://www.zeit.de/inhalt') cover_url = inhalt.find('div', attrs={'class': 'singlearchive clearfix'}).img[ 'src'].replace('icon_', '') - except: + except Exception: self.log.warning('Using static old low-res cover') cover_url = 'http://images.zeit.de/bilder/titelseiten_zeit/1946/001_001.jpg' return cover_url diff --git a/setup/build.py b/setup/build.py index 3e9f3975cc..2af07d649b 100644 --- a/setup/build.py +++ b/setup/build.py @@ -615,7 +615,7 @@ class Build(Command): ''' try: subprocess.check_call(*args, **kwargs) - except: + except Exception: cmdline = ' '.join([f'"{arg}"' if ' ' in arg else arg for arg in args[0]]) print(f'Error while executing: {cmdline}\n') raise diff --git a/setup/build_environment.py b/setup/build_environment.py index 78640e8771..754ab4ce03 100644 --- a/setup/build_environment.py +++ b/setup/build_environment.py @@ -85,7 +85,7 @@ def run_pkgconfig(name, envvar, default, flag, prefix): stdout=subprocess.PIPE).stdout.read().decode('utf-8') ans = [x.strip() for x in raw.split(prefix)] ans = [x for x in ans if x and (prefix=='-l' or os.path.exists(x))] - except: + except Exception: print('Failed to run pkg-config:', PKGCONFIG, 'for:', name) return ans or ([default] if default else []) diff --git a/setup/git_pre_commit_hook.py b/setup/git_pre_commit_hook.py index a5b6a79038..04169204f4 100755 --- a/setup/git_pre_commit_hook.py +++ b/setup/git_pre_commit_hook.py @@ -47,7 +47,7 @@ class Bug: raw = urllib.request.urlopen(LAUNCHPAD_BUG.format(bug)).read() h1 = html.fromstring(raw).xpath('//h1[@id="edit-title"]')[0] summary = html.tostring(h1, method='text', encoding=str).strip() - except: + except Exception: summary = 'Private bug' else: summary = json.loads(urllib.request.urlopen(GITHUB_BUG.format(bug)).read())['title'] diff --git a/setup/hosting.py b/setup/hosting.py index 7ce85ced49..0a8d1b601a 100644 --- a/setup/hosting.py +++ b/setup/hosting.py @@ -118,7 +118,7 @@ class SourceForge(Base): # {{{ ]) except KeyboardInterrupt: raise SystemExit(1) - except: + except Exception: print('\nUpload failed, trying again in 30 seconds') time.sleep(30) else: @@ -421,7 +421,7 @@ def upload_to_servers(files, version): # {{{ # f'root@{server}:{rdir}']) # except KeyboardInterrupt: # raise SystemExit(1) - # except: + # except Exception: # print('\nUpload failed, trying again in 30 seconds') # time.sleep(30) # else: diff --git a/setup/resources.py b/setup/resources.py index 15edea7e88..bb1c42990a 100644 --- a/setup/resources.py +++ b/setup/resources.py @@ -187,7 +187,7 @@ class Resources(Command): # {{{ lambda x: inspect.ismethod(x) and x.__name__ == 'evaluate') try: lines = [l[4:] for l in inspect.getsourcelines(eval_func[0][1])[0]] - except: + except Exception: continue lines = ''.join(lines) function_dict[obj.name] = lines diff --git a/setup/upload.py b/setup/upload.py index ca45522b75..2b230e7213 100644 --- a/setup/upload.py +++ b/setup/upload.py @@ -281,7 +281,7 @@ class UploadInstallers(Command): # {{{ while True: try: send_data(tdir) - except: + except Exception: print('\nUpload to staging failed, retrying in a minute') time.sleep(60) else: @@ -290,7 +290,7 @@ class UploadInstallers(Command): # {{{ while True: try: send_to_backup(tdir) - except: + except Exception: print('\nUpload to backup failed, retrying in a minute') time.sleep(60) else: diff --git a/src/calibre/__init__.py b/src/calibre/__init__.py index 8a9c97974b..86ac8c957f 100644 --- a/src/calibre/__init__.py +++ b/src/calibre/__init__.py @@ -273,7 +273,7 @@ def get_parsed_proxy(typ='http', debug=True): } if ans['port']: ans['port'] = int(ans['port']) - except: + except Exception: if debug: import traceback traceback.print_exc() diff --git a/src/calibre/constants.py b/src/calibre/constants.py index a2dfc853cf..349df5b0bf 100644 --- a/src/calibre/constants.py +++ b/src/calibre/constants.py @@ -54,7 +54,7 @@ TOC_DIALOG_APP_UID = 'com.calibre-ebook.toc-editor' try: preferred_encoding = locale.getpreferredencoding() codecs.lookup(preferred_encoding) -except: +except Exception: preferred_encoding = 'utf-8' dark_link_color = '#6cb4ee' @@ -391,7 +391,7 @@ else: config_dir = os.path.join(bdir, 'calibre') try: os.makedirs(config_dir, mode=CONFIG_DIR_MODE) - except: + except Exception: pass if not os.path.exists(config_dir) or \ not os.access(config_dir, os.W_OK) or not \ @@ -405,7 +405,7 @@ else: try: import shutil shutil.rmtree(config_dir) - except: + except Exception: pass atexit.register(cleanup_cdir) # }}} diff --git a/src/calibre/customize/__init__.py b/src/calibre/customize/__init__.py index 7f63ea7a3c..7f8f4c53d9 100644 --- a/src/calibre/customize/__init__.py +++ b/src/calibre/customize/__init__.py @@ -623,7 +623,7 @@ class CatalogPlugin(Plugin): # {{{ for file in files_to_copy: try: resources.extract(file, self.resources_path) - except: + except Exception: print(f' customize:__init__.initialize(): {file} not found in {os.path.basename(self.plugin_path)}') continue resources.close() diff --git a/src/calibre/customize/builtins.py b/src/calibre/customize/builtins.py index 4e2ef8cdaa..5b2e66757a 100644 --- a/src/calibre/customize/builtins.py +++ b/src/calibre/customize/builtins.py @@ -144,7 +144,7 @@ class ComicMetadataReader(MetadataReaderPlugin): series_index = 'volume' try: mi.smart_update(get_comic_metadata(stream, ftype, series_index=series_index)) - except: + except Exception: pass if ret is not None: path, data = ret diff --git a/src/calibre/customize/conversion.py b/src/calibre/customize/conversion.py index 25e6990079..64158db28b 100644 --- a/src/calibre/customize/conversion.py +++ b/src/calibre/customize/conversion.py @@ -231,7 +231,7 @@ class InputFormatPlugin(Plugin): log(f'InputFormatPlugin: {self.name} running') if hasattr(stream, 'name'): log('on', stream.name) - except: + except Exception: # In case stdout is broken pass diff --git a/src/calibre/customize/ui.py b/src/calibre/customize/ui.py index 6313da5e50..4e76e8e0e9 100644 --- a/src/calibre/customize/ui.py +++ b/src/calibre/customize/ui.py @@ -212,7 +212,7 @@ def _run_filetype_plugins(path_to_file, ft=None, occasion='preprocess'): pass try: nfp = plugin.run(nfp) or nfp - except: + except Exception: print(f'Running file type plugin {plugin.name} failed with traceback:', file=oe) traceback.print_exc(file=oe) sys.stdout, sys.stderr = oo, oe @@ -495,7 +495,7 @@ def get_file_type_metadata(stream, ftype): stream.seek(0) mi = plugin.get_metadata(stream, ftype.lower().strip()) break - except: + except Exception: traceback.print_exc() continue return mi @@ -514,7 +514,7 @@ def set_file_type_metadata(stream, mi, ftype, report_error=None): plugin.site_customization = customization.get(plugin.name, '') plugin.set_metadata(stream, mi, ftype.lower().strip()) break - except: + except Exception: if report_error is None: from calibre import prints prints('Failed to set metadata for the', ftype.upper(), 'format of:', getattr(mi, 'title', ''), file=sys.stderr) @@ -569,7 +569,7 @@ def remove_plugin(plugin_or_name): zfp = plugins[name] if os.path.exists(zfp): os.remove(zfp) - except: + except Exception: pass plugins.pop(name) config['plugins'] = plugins @@ -829,7 +829,7 @@ def initialize_plugins(perf=False): if perf: times[plugin.name] = time.time() - st _initialized_plugins.append(plugin) - except: + except Exception: print('Failed to initialize plugin:', repr(zfp), file=sys.stderr) if DEBUG: traceback.print_exc() diff --git a/src/calibre/customize/zipplugin.py b/src/calibre/customize/zipplugin.py index fcf52013b5..3e7bc5fa4d 100644 --- a/src/calibre/customize/zipplugin.py +++ b/src/calibre/customize/zipplugin.py @@ -44,7 +44,7 @@ def get_resources(zfp, name_or_list_of_names, print_tracebacks_for_missing_resou for name in names: try: ans[name] = zf.read(name) - except: + except Exception: if print_tracebacks_for_missing_resources: print('Failed to load resource:', repr(name), 'from the plugin zip file:', zfp, file=sys.stderr) import traceback @@ -331,7 +331,7 @@ class CalibrePluginFinder: f'The plugin at {as_unicode(path_to_zip_file)} cannot be used on {platform}') return ans - except: + except Exception: with self._lock: del self.loaded_plugins[plugin_name] raise diff --git a/src/calibre/db/__init__.py b/src/calibre/db/__init__.py index 5360706d80..10ca306f08 100644 --- a/src/calibre/db/__init__.py +++ b/src/calibre/db/__init__.py @@ -63,7 +63,7 @@ def _get_series_values(val): try: idx = float(idx) return match.group(1).strip(), idx - except: + except Exception: pass return val, None diff --git a/src/calibre/db/backend.py b/src/calibre/db/backend.py index d6c7298e26..6e3ac19f7e 100644 --- a/src/calibre/db/backend.py +++ b/src/calibre/db/backend.py @@ -113,7 +113,7 @@ class DBPrefs(dict): # {{{ for key, val in self.db.conn.get('SELECT key,val FROM preferences'): try: val = self.raw_to_object(val) - except: + except Exception: prints('Failed to read value for:', key, 'from db') continue dict.__setitem__(self, key, val) @@ -185,7 +185,7 @@ class DBPrefs(dict): # {{{ data = data.encode('utf-8') with open(to_filename, 'wb') as f: f.write(data) - except: + except Exception: import traceback traceback.print_exc() @@ -204,12 +204,12 @@ def pynocase(one, two, encoding='utf-8'): if isbytestring(one): try: one = one.decode(encoding, 'replace') - except: + except Exception: pass if isbytestring(two): try: two = two.decode(encoding, 'replace') - except: + except Exception: pass return cmp(one.lower(), two.lower()) @@ -648,7 +648,7 @@ class DB: rules = migrate_old_rule(self.field_metadata, templ) for templ in rules: old_rules.append((col, templ)) - except: + except Exception: pass if old_rules: self.prefs['column_color_rules'] += old_rules @@ -673,7 +673,7 @@ class DB: for t in ogst: ngst[icu_lower(t)] = ogst[t] self.prefs.set('grouped_search_terms', ngst) - except: + except Exception: pass # migrate the gui_restriction preference to a virtual library @@ -1467,7 +1467,7 @@ class DB: cur.execute('BEGIN EXCLUSIVE TRANSACTION') try: cur.execute(metadata_sqlite) - except: + except Exception: cur.execute('ROLLBACK') raise else: @@ -1597,7 +1597,7 @@ class DB: for table in itervalues(self.tables): try: table.read(self) - except: + except Exception: prints('Failed to read table:', table.name) import pprint pprint.pprint(table.metadata) @@ -1756,7 +1756,7 @@ class DB: try: hardlink_file(path, dest) return True - except: + except Exception: pass with open(dest, 'wb') as d: shutil.copyfileobj(f, d) @@ -1848,7 +1848,7 @@ class DB: try: if path != dest: os.rename(path, dest) - except: + except Exception: pass # Nothing too catastrophic happened, the cases mismatch, that's all else: windows_atomic_move.copy_path_to(path, dest) @@ -1875,7 +1875,7 @@ class DB: try: hardlink_file(path, dest) return True - except: + except Exception: pass with open(path, 'rb') as f, open(make_long_path_useable(dest), 'wb') as d: shutil.copyfileobj(f, d) @@ -2386,7 +2386,7 @@ class DB: def safe_load(val): try: return json.loads(val, object_hook=from_json) - except: + except Exception: return default if len(book_ids) == 1: diff --git a/src/calibre/db/backup.py b/src/calibre/db/backup.py index 23c8429c96..907864fa2f 100644 --- a/src/calibre/db/backup.py +++ b/src/calibre/db/backup.py @@ -77,7 +77,7 @@ class MetadataBackup(Thread): return except Abort: raise - except: + except Exception: # Happens during interpreter shutdown return @@ -85,13 +85,13 @@ class MetadataBackup(Thread): try: mi, sequence = self.db.get_metadata_for_dump(book_id) - except: + except Exception: prints('Failed to get backup metadata for id:', book_id, 'once') traceback.print_exc() self.wait(self.interval) try: mi, sequence = self.db.get_metadata_for_dump(book_id) - except: + except Exception: prints('Failed to get backup metadata for id:', book_id, 'again, giving up') traceback.print_exc() return @@ -107,7 +107,7 @@ class MetadataBackup(Thread): try: raw = metadata_to_opf(mi) - except: + except Exception: prints('Failed to convert to opf for id:', book_id) traceback.print_exc() self.db.clear_dirtied(book_id, sequence) @@ -117,13 +117,13 @@ class MetadataBackup(Thread): try: self.db.write_backup(book_id, raw) - except: + except Exception: prints('Failed to write backup metadata for id:', book_id, 'once') traceback.print_exc() self.wait(self.interval) try: self.db.write_backup(book_id, raw) - except: + except Exception: prints('Failed to write backup metadata for id:', book_id, 'again, giving up') traceback.print_exc() return diff --git a/src/calibre/db/cache.py b/src/calibre/db/cache.py index 3c599c6f9d..56d7bf13f3 100644 --- a/src/calibre/db/cache.py +++ b/src/calibre/db/cache.py @@ -127,7 +127,7 @@ def _add_default_custom_column_values(mi, fm): if dt == 'datetime' and icu_lower(dv) == 'now': dv = nowf() mi.set(cc, dv) - except: + except Exception: traceback.print_exc() @@ -1003,7 +1003,7 @@ class Cache: try: name = self.fields['formats'].format_fname(book_id, fmt) path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: raise NoSuchFormat(f'Record {book_id} has no fmt: {fmt}') return self.backend.format_hash(book_id, fmt, name, path) @@ -1033,7 +1033,7 @@ class Cache: try: name = self.fields['formats'].format_fname(book_id, fmt) path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return {} ans = {} @@ -1256,7 +1256,7 @@ class Cache: fmt = (fmt or '').upper() try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return None if path: if fmt == '__COVER_INTERNAL__': @@ -1264,7 +1264,7 @@ class Cache: else: try: name = self.fields['formats'].format_fname(book_id, fmt) - except: + except Exception: return None if name: return self.backend.format_abspath(book_id, fmt, name, path) @@ -1276,7 +1276,7 @@ class Cache: try: name = self.fields['formats'].format_fname(book_id, fmt) path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return False return self.backend.has_format(book_id, fmt, name, path) @@ -1324,13 +1324,13 @@ class Cache: if verify_formats and ans: try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return () def verify(fmt): try: name = self.fields['formats'].format_fname(book_id, fmt) - except: + except Exception: return False return self.backend.has_format(book_id, fmt, name, path) @@ -1361,7 +1361,7 @@ class Cache: with self.safe_read_lock: try: fname = self.fields['formats'].format_fname(book_id, fmt) - except: + except Exception: return None fname += ext @@ -1369,7 +1369,7 @@ class Cache: d = os.path.join(bd, 'format_abspath') try: os.makedirs(d) - except: + except Exception: pass ret = os.path.join(d, fname) try: @@ -1387,7 +1387,7 @@ class Cache: with self.safe_read_lock: try: fname = self.fields['formats'].format_fname(book_id, fmt) - except: + except Exception: return None fname += ext @@ -1703,7 +1703,7 @@ class Cache: # try to write the opf, because it will go to the wrong folder. if self._field_for('path', book_id): mi = self._metadata_as_object_for_dump(book_id) - except: + except Exception: # This almost certainly means that the book has been deleted while # the backup operation sat in the queue. traceback.print_exc() @@ -1723,7 +1723,7 @@ class Cache: def write_backup(self, book_id, raw): try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return self.backend.write_backup(path, raw) @@ -1738,7 +1738,7 @@ class Cache: if no such backup exists. ''' try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return try: @@ -1774,7 +1774,7 @@ class Cache: self._write_backup(book_id, raw) if remove_from_dirtied: self._clear_dirtied(book_id, sequence) - except: + except Exception: pass if callback is not None: callback(book_id, mi, True) @@ -1856,7 +1856,7 @@ class Cache: def protected_set_field(name, val): try: set_field(name, val) - except: + except Exception: if ignore_errors: traceback.print_exc() else: @@ -1870,7 +1870,7 @@ class Cache: cdata = f.read() or None if cdata is not None: self._set_cover({book_id: cdata}) - except: + except Exception: if ignore_errors: traceback.print_exc() else: @@ -1925,7 +1925,7 @@ class Cache: extra = mi.get_extra(key) if extra is not None or force_changes: protected_set_field(idx, extra) - except: + except Exception: # sqlite will rollback the entire transaction, thanks to the with # statement, so we have to re-read everything form the db to ensure # the db and Cache are in sync @@ -2035,12 +2035,12 @@ class Cache: for book_id, fmts in iteritems(formats_map): try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: continue for fmt in fmts: try: name = self.fields['formats'].format_fname(book_id, fmt) - except: + except Exception: continue if name and path: removes[book_id].add((fmt, name, path)) @@ -2725,7 +2725,7 @@ class Cache: return identical_book_ids try: book_ids = self._search(query, restriction=search_restriction, book_ids=book_ids) - except: + except Exception: traceback.print_exc() return identical_book_ids if qauthors and book_ids: @@ -3061,14 +3061,14 @@ class Cache: mi.cover_data = ('jpeg', cdata) try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: continue for fmt in fmts: if only_fmts is not None and fmt.lower() not in only_fmts: continue try: name = self.fields['formats'].format_fname(book_id, fmt) - except: + except Exception: continue if name and path: try: @@ -3333,7 +3333,7 @@ class Cache: def are_paths_inside_book_dir(self, book_id, paths, sub_path=''): try: path = self._field_for('path', book_id).replace('/', os.sep) - except: + except Exception: return set() return {x for x in paths if self.backend.is_path_inside_book_dir(x, path, sub_path)} diff --git a/src/calibre/db/categories.py b/src/calibre/db/categories.py index 79f9fc2d9b..42ab1063db 100644 --- a/src/calibre/db/categories.py +++ b/src/calibre/db/categories.py @@ -133,7 +133,7 @@ def clean_user_categories(dbcache): try: if new_cats != user_cats: dbcache.set_pref('user_categories', new_cats) - except: + except Exception: pass return new_cats diff --git a/src/calibre/db/cli/cmd_set_metadata.py b/src/calibre/db/cli/cmd_set_metadata.py index 6887661e6c..c2b99096a3 100644 --- a/src/calibre/db/cli/cmd_set_metadata.py +++ b/src/calibre/db/cli/cmd_set_metadata.py @@ -127,7 +127,7 @@ def main(opts, args, dbctx): try: int(x) return True - except: + except Exception: return False if len(args) < 1 or not verify_int(args[0]): diff --git a/src/calibre/db/lazy.py b/src/calibre/db/lazy.py index 1f0c310ab9..b29b7919d9 100644 --- a/src/calibre/db/lazy.py +++ b/src/calibre/db/lazy.py @@ -86,7 +86,7 @@ class FormatMetadata(MutableBase, MutableMapping): for f in self._formats: try: self._values[f] = db.format_metadata(self._id, f) - except: + except Exception: pass diff --git a/src/calibre/db/legacy.py b/src/calibre/db/legacy.py index 45cb35b5da..6771bebd47 100644 --- a/src/calibre/db/legacy.py +++ b/src/calibre/db/legacy.py @@ -316,7 +316,7 @@ class LibraryDatabase: for listener in self.listeners: try: listener(event, ids) - except: + except Exception: traceback.print_exc() continue diff --git a/src/calibre/db/restore.py b/src/calibre/db/restore.py index 514a784668..36203e4f27 100644 --- a/src/calibre/db/restore.py +++ b/src/calibre/db/restore.py @@ -154,7 +154,7 @@ class Restore(Thread): if self.successes == 0 and len(self.dirs) > 0: raise Exception('Something bad happened') self.replace_db() - except: + except Exception: self.tb = traceback.format_exc() if self.failed_dirs: for x in self.failed_dirs: @@ -183,7 +183,7 @@ class Restore(Thread): return True self.progress_callback(_('Finished restoring preferences'), 1) return False - except: + except Exception: traceback.print_exc() self.progress_callback(None, 1) self.progress_callback(_('Restoring preferences and column metadata failed'), 0) diff --git a/src/calibre/db/schema_upgrades.py b/src/calibre/db/schema_upgrades.py index e73f01a57e..b4a7795f1e 100644 --- a/src/calibre/db/schema_upgrades.py +++ b/src/calibre/db/schema_upgrades.py @@ -30,7 +30,7 @@ class SchemaUpgrade: prints(f'Upgrading database to version {uv + 1}...') meth() self.db.execute(f'pragma user_version={uv + 1}') - except: + except Exception: self.db.execute('ROLLBACK') raise else: diff --git a/src/calibre/db/search.py b/src/calibre/db/search.py index 5603908b9e..bd9951006b 100644 --- a/src/calibre/db/search.py +++ b/src/calibre/db/search.py @@ -196,13 +196,13 @@ class DateSearch: # {{{ num = query[:-len(m.group(1))] try: qd = now() - timedelta(int(num)) - except: + except Exception: raise ParseException(_('Number conversion error: {0}').format(num)) field_count = 3 else: try: qd = parse_date(query, as_utc=False) - except: + except Exception: raise ParseException(_('Date conversion error: {0}').format(query)) if '-' in query: field_count = query.count('-') + 1 @@ -588,7 +588,7 @@ class Parser(SearchQueryParser): # {{{ c -= m if len(c) == 0: break - except: + except Exception: pass return matches @@ -662,7 +662,7 @@ class Parser(SearchQueryParser): # {{{ sep = sep.lower() else: sep = 't' - except: + except Exception: if DEBUG: import traceback traceback.print_exc() @@ -720,17 +720,17 @@ class Parser(SearchQueryParser): # {{{ try: rating_query = int(float(query)) * 2 - except: + except Exception: rating_query = None try: int_query = int(float(query)) - except: + except Exception: int_query = None try: float_query = float(query) - except: + except Exception: float_query = None for location in locations: diff --git a/src/calibre/db/tables.py b/src/calibre/db/tables.py index ff3a2ae1db..c81f4b3b28 100644 --- a/src/calibre/db/tables.py +++ b/src/calibre/db/tables.py @@ -31,7 +31,7 @@ def c_parse(val): return datetime(int(val), 1, 3, tzinfo=utc_tz) if val is None: return UNDEFINED_DATE - except: + except Exception: pass else: try: diff --git a/src/calibre/db/tests/reading.py b/src/calibre/db/tests/reading.py index 42783b680c..9feb4277b1 100644 --- a/src/calibre/db/tests/reading.py +++ b/src/calibre/db/tests/reading.py @@ -628,7 +628,7 @@ class ReadingTest(BaseTest): def f(x): try: x.pop('rec_index', None) - except: + except Exception: pass return x if field not in {'#series_index'}: diff --git a/src/calibre/db/utils.py b/src/calibre/db/utils.py index 5a39cff7f6..7ea9c09e4f 100644 --- a/src/calibre/db/utils.py +++ b/src/calibre/db/utils.py @@ -35,7 +35,7 @@ def force_to_bool(val): val = False else: val = bool(int(val)) - except: + except Exception: val = None return val diff --git a/src/calibre/db/write.py b/src/calibre/db/write.py index ec704b5858..b6d727494b 100644 --- a/src/calibre/db/write.py +++ b/src/calibre/db/write.py @@ -47,7 +47,7 @@ def get_series_values(val): try: idx = float(idx) return match.group(1).strip(), idx - except: + except Exception: pass return val, None diff --git a/src/calibre/debug.py b/src/calibre/debug.py index 4453916de5..df44014610 100644 --- a/src/calibre/debug.py +++ b/src/calibre/debug.py @@ -174,7 +174,7 @@ def print_basic_debug_info(out=None): out('OSX:', platform.mac_ver()) else: out('Linux:', platform.linux_distribution()) - except: + except Exception: pass out('Interface language:', str(set_translators.lang)) out('EXE path:', sys.executable) diff --git a/src/calibre/devices/__init__.py b/src/calibre/devices/__init__.py index b7cd66642e..64eca54f39 100644 --- a/src/calibre/devices/__init__.py +++ b/src/calibre/devices/__init__.py @@ -52,7 +52,7 @@ def get_connected_device(): for det, d in connected_devices: try: d.open(det, None) - except: + except Exception: continue else: dev = d @@ -89,7 +89,7 @@ def debug(ioreg_to_tmp=False, buf=None, plugins=None, for d in devplugins: try: d.startup() - except: + except Exception: out(f'Startup failed for device plugin: {d}') if disabled_plugins is None: @@ -165,7 +165,7 @@ def debug(ioreg_to_tmp=False, buf=None, plugins=None, dev.reset(detected_device=det) dev.open(det, None) out('OK') - except: + except Exception: import traceback errors[dev] = traceback.format_exc() out('failed') @@ -203,7 +203,7 @@ def debug(ioreg_to_tmp=False, buf=None, plugins=None, for d in devplugins: try: d.shutdown() - except: + except Exception: pass diff --git a/src/calibre/devices/android/driver.py b/src/calibre/devices/android/driver.py index 08964f3217..56cdd5536b 100644 --- a/src/calibre/devices/android/driver.py +++ b/src/calibre/devices/android/driver.py @@ -313,7 +313,7 @@ class ANDROID(USBMS): def windows_sort_drives(self, drives): try: vid, pid, bcd = self.device_being_opened[:3] - except: + except Exception: vid, pid, bcd = -1, -1, -1 if (vid, pid, bcd) == (0x0e79, 0x1408, 0x0222): letter_a = drives.get('carda', None) diff --git a/src/calibre/devices/cli.py b/src/calibre/devices/cli.py index 3d30a3ba4c..f3164690b5 100755 --- a/src/calibre/devices/cli.py +++ b/src/calibre/devices/cli.py @@ -175,7 +175,7 @@ def shutdown_plugins(): for d in device_plugins(): try: d.shutdown() - except: + except Exception: pass @@ -207,7 +207,7 @@ def main(): for d in device_plugins(): try: d.startup() - except: + except Exception: print(f'Startup failed for device plugin: {d}') if d.MANAGES_DEVICE_PRESENCE: cd = d.detect_managed_devices(scanner.devices) @@ -230,7 +230,7 @@ def main(): for det, d in connected_devices: try: d.open(det, None) - except: + except Exception: continue else: dev = d diff --git a/src/calibre/devices/hanlin/driver.py b/src/calibre/devices/hanlin/driver.py index ba4b9208eb..c0bf885833 100644 --- a/src/calibre/devices/hanlin/driver.py +++ b/src/calibre/devices/hanlin/driver.py @@ -44,11 +44,11 @@ class HANLINV3(USBMS): try: main_num = int(re.findall(r'\d+', main)[0]) if main else None - except: + except Exception: main_num = None try: card_num = int(re.findall(r'\d+', card)[0]) if card else None - except: + except Exception: card_num = None if card_num is not None and main_num is not None and card_num > main_num: diff --git a/src/calibre/devices/hanvon/driver.py b/src/calibre/devices/hanvon/driver.py index 83cdd122b2..00b0b89845 100644 --- a/src/calibre/devices/hanvon/driver.py +++ b/src/calibre/devices/hanvon/driver.py @@ -142,7 +142,7 @@ class ALEX(N516): cpath = self.alex_cpath(path) if os.path.exists(cpath): os.remove(cpath) - except: + except Exception: pass self.report_progress(1.0, _('Removing books from device...')) diff --git a/src/calibre/devices/kindle/bookmark.py b/src/calibre/devices/kindle/bookmark.py index b0f2a79897..6ef5e0ce52 100644 --- a/src/calibre/devices/kindle/bookmark.py +++ b/src/calibre/devices/kindle/bookmark.py @@ -27,7 +27,7 @@ class Bookmark: # {{{ self.get_book_length() try: self.percent_read = min(float(100*self.last_read / self.book_length),100) - except: + except Exception: self.percent_read = 0 def record(self, n): @@ -167,7 +167,7 @@ class Bookmark: # {{{ text += line.strip() else: raise Exception('error') - except: + except Exception: text = '(Unable to extract highlight text from My Clippings.txt)' return text @@ -288,7 +288,7 @@ class Bookmark: # {{{ self.nrecs, = unpack('>H', self.data[76:78]) record0 = self.record(0) self.book_length = int(unpack('>I', record0[0x04:0x08])[0]) - except: + except Exception: pass elif self.bookmark_extension == 'tan': # Read bookLength from metadata @@ -297,7 +297,7 @@ class Bookmark: # {{{ with open(book_fs,'rb') as f: mu = MetadataUpdater(f) self.book_length = mu.book_length - except: + except Exception: pass else: print(f'unsupported bookmark_extension: {self.bookmark_extension}') diff --git a/src/calibre/devices/kindle/driver.py b/src/calibre/devices/kindle/driver.py index b7f8723d56..6e61d322fc 100644 --- a/src/calibre/devices/kindle/driver.py +++ b/src/calibre/devices/kindle/driver.py @@ -463,7 +463,7 @@ class KINDLE2(KINDLE): if os.access(collections, os.R_OK): try: self.kindle_update_booklist(bl, collections) - except: + except Exception: import traceback traceback.print_exc() return bl @@ -513,7 +513,7 @@ class KINDLE2(KINDLE): # Upload the cover thumbnail try: self.upload_kindle_thumbnail(metadata, filepath) - except: + except Exception: import traceback traceback.print_exc() # Upload the apnx file @@ -621,7 +621,7 @@ class KINDLE2(KINDLE): if cust_col_name: try: custom_page_count = int(metadata.get(cust_col_name, 0)) - except: + except Exception: pass apnx_path = f'{os.path.join(path, filename)}.apnx' @@ -638,10 +638,10 @@ class KINDLE2(KINDLE): method = temp else: print(f'Invalid method choice for this book ({temp!r}), ignoring.') - except: + except Exception: print('Could not retrieve override method choice, using default.') apnx_builder.write_apnx(filepath, apnx_path, method=method, page_count=custom_page_count) - except: + except Exception: print('Failed to generate APNX') import traceback traceback.print_exc() diff --git a/src/calibre/devices/kobo/bookmark.py b/src/calibre/devices/kobo/bookmark.py index 0d55c3e299..239d156283 100644 --- a/src/calibre/devices/kobo/bookmark.py +++ b/src/calibre/devices/kobo/bookmark.py @@ -67,7 +67,7 @@ class Bookmark: # {{{ 'chapter_index': chapter_row['VolumeIndex'] } debug_print(f'Kobo::Bookmark::get_bookmark_data - getting kepub chapter: kepub chapters={kepub_chapters}') - except: + except Exception: debug_print('Kobo::Bookmark::get_bookmark_data - No chapters found') cursor.execute(bookmark_query, book_query_values) diff --git a/src/calibre/devices/kobo/books.py b/src/calibre/devices/kobo/books.py index 598fb48af1..7b458f20a1 100644 --- a/src/calibre/devices/kobo/books.py +++ b/src/calibre/devices/kobo/books.py @@ -46,20 +46,20 @@ class Book(Book_): if ContentType == '6' and date is not None: try: self.datetime = time.strptime(date, '%Y-%m-%dT%H:%M:%S.%f') - except: + except Exception: try: self.datetime = time.strptime(date.split('+')[0], '%Y-%m-%dT%H:%M:%S') - except: + except Exception: try: self.datetime = time.strptime(date.split('+')[0], '%Y-%m-%d') - except: + except Exception: try: self.datetime = parse_date(date, assume_utc=True).timetuple() - except: + except Exception: try: self.datetime = time.gmtime(os.path.getctime(self.path)) - except: + except Exception: self.datetime = time.gmtime() self.kobo_metadata = Metadata(title, self.authors) diff --git a/src/calibre/devices/kobo/driver.py b/src/calibre/devices/kobo/driver.py index 1e1f3cd925..1d8040f158 100644 --- a/src/calibre/devices/kobo/driver.py +++ b/src/calibre/devices/kobo/driver.py @@ -332,7 +332,7 @@ class KOBO(USBMS): title = 'FILE MISSING: ' + title book = self.book_class(prefix, lpath, title, authors, mime, date, ContentType, ImageID, size=1048576) - except: + except Exception: debug_print('prefix: ', prefix, 'lpath: ', lpath, 'title: ', title, 'authors: ', authors, 'mime: ', mime, 'date: ', date, 'ContentType: ', ContentType, 'ImageID: ', ImageID) raise @@ -342,7 +342,7 @@ class KOBO(USBMS): if bl.add_book(book, replace_metadata=False): changed = True - except: # Probably a path encoding error + except Exception: # Probably a path encoding error import traceback traceback.print_exc() return changed @@ -809,7 +809,7 @@ class KOBO(USBMS): try: cursor.execute(query) - except: + except Exception: debug_print(' Database Exception: Unable to reset ReadStatus list') raise finally: @@ -839,7 +839,7 @@ class KOBO(USBMS): try: debug_print(f'Kobo::set_readstatus - Making change - ContentID={ContentID}, ReadStatus={ReadStatus}, DateLastRead={datelastread}') cursor.execute("update content set ReadStatus=?,FirstTimeReading='false',DateLastRead=? where BookID is Null and ContentID = ?", t) - except: + except Exception: debug_print(' Database Exception: Unable to update ReadStatus') raise @@ -1038,7 +1038,7 @@ class KOBO(USBMS): debug_print('KOBO: uploading cover') try: self._upload_cover(path, filename, metadata, filepath, uploadgrayscale) - except: + except Exception: debug_print('FAILED to upload cover', filepath) def _upload_cover(self, path, filename, metadata, filepath, uploadgrayscale): @@ -1248,13 +1248,13 @@ class KOBO(USBMS): if bookmark.last_read is not None: try: last_read = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(calendar.timegm(time.strptime(bookmark.last_read, '%Y-%m-%dT%H:%M:%S')))) - except: + except Exception: try: last_read = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(calendar.timegm(time.strptime(bookmark.last_read, '%Y-%m-%dT%H:%M:%S.%f')))) - except: + except Exception: try: last_read = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(calendar.timegm(time.strptime(bookmark.last_read, '%Y-%m-%dT%H:%M:%SZ')))) - except: + except Exception: last_read = time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime()) else: # self.datetime = time.gmtime() @@ -1846,10 +1846,10 @@ class KOBOTOUCH(KOBO): if DateCreated is not None: try: kobo_metadata.pubdate = parse_date(DateCreated, assume_utc=True) - except: + except Exception: try: kobo_metadata.pubdate = datetime.strptime(DateCreated, '%Y-%m-%dT%H:%M:%S.%fZ') - except: + except Exception: debug_print(f"KoboTouch:update_booklist - Cannot convert date - DateCreated='{DateCreated}'") idx = bl_cache.get(lpath, None) @@ -1966,7 +1966,7 @@ class KOBOTOUCH(KOBO): if show_debug: debug_print(' book.device_collections', book.device_collections) debug_print(' book.title', book.title) - except: # Probably a path encoding error + except Exception: # Probably a path encoding error import traceback traceback.print_exc() return changed @@ -3338,7 +3338,7 @@ class KOBOTOUCH(KOBO): if book.kobo_series_number is not None: try: kobo_series_number = float(book.kobo_series_number) - except: + except Exception: kobo_series_number = None if kobo_series_number == book.series_index: if show_debug: @@ -3359,7 +3359,7 @@ class KOBOTOUCH(KOBO): debug_print('KoboTouch:set_series - about to set - parameters:', update_values) cursor.execute(update_query, update_values) self.series_set += 1 - except: + except Exception: debug_print(' Database Exception: Unable to set series info') raise finally: @@ -3435,7 +3435,7 @@ class KOBOTOUCH(KOBO): self.series_index_template, newmi, 'Kobo series number template', newmi) else: new_series_number = f'{newmi.series_index:g}' - except: + except Exception: new_series_number = None else: new_series = None @@ -3590,7 +3590,7 @@ class KOBOTOUCH(KOBO): debug_print('KoboTouch:set_core_metadata - about to set - update_query:', update_query) cursor.execute(update_query, update_values) self.core_metadata_set += 1 - except: + except Exception: debug_print(' Database Exception: Unable to set the core metadata') debug_print(f' Query was: {update_query}') debug_print(f' Values were: {update_values}') @@ -3623,7 +3623,7 @@ class KOBOTOUCH(KOBO): cls.opts = cls.settings() try: return getattr(cls.opts, key) - except: + except Exception: debug_print('KoboTouch::get_prefs - probably an extra_customization:', key) return None @@ -4342,7 +4342,7 @@ class KOBOTOUCH(KOBO): self.debugging_title = self.get_debugging_title() try: is_debugging = (len(self.debugging_title) > 0 and title.lower().find(self.debugging_title.lower()) >= 0) or len(title) == 0 - except: + except Exception: debug_print(f"KoboTouch::is_debugging_title - Exception checking debugging title for title '{title}'.") is_debugging = False diff --git a/src/calibre/devices/mtp/defaults.py b/src/calibre/devices/mtp/defaults.py index f79c25dd4c..3877d84743 100644 --- a/src/calibre/devices/mtp/defaults.py +++ b/src/calibre/devices/mtp/defaults.py @@ -51,7 +51,7 @@ class DeviceDefaults: if m is not None: try: vid, pid = int(m.group(1), 16), int(m.group(2), 16) - except: + except Exception: traceback.print_exc() else: vid, pid = device.vendor_id, device.product_id diff --git a/src/calibre/devices/mtp/driver.py b/src/calibre/devices/mtp/driver.py index 68299022b2..d91c9a72a9 100644 --- a/src/calibre/devices/mtp/driver.py +++ b/src/calibre/devices/mtp/driver.py @@ -228,7 +228,7 @@ class MTP_DEVICE(BASE): try: stream = self.get_mtp_file(f) dinfo = json.load(stream, object_hook=from_json) - except: + except Exception: prints('Failed to load existing driveinfo.calibre file, with error:') traceback.print_exc() dinfo = {} @@ -304,7 +304,7 @@ class MTP_DEVICE(BASE): try: stream = self.get_mtp_file(cache) json_codec.decode_from_file(stream, bl, Book, sid) - except: + except Exception: need_sync = True relpath_cache = {b.mtp_relpath:i for i, b in enumerate(bl)} @@ -333,7 +333,7 @@ class MTP_DEVICE(BASE): try: book.smart_update(self.read_file_metadata(mtp_file)) debug('Read metadata for', '/'.join(mtp_file.full_path)) - except: + except Exception: prints('Failed to read metadata from', '/'.join(mtp_file.full_path)) traceback.print_exc() @@ -723,7 +723,7 @@ class MTP_DEVICE(BASE): if parent.empty and parent.can_delete and not parent.is_system: try: self.recursive_delete(parent) - except: + except Exception: prints('Failed to delete parent: {}, ignoring'.format('/'.join(parent.full_path))) def delete_books(self, paths, end_session=True): diff --git a/src/calibre/devices/mtp/unix/driver.py b/src/calibre/devices/mtp/unix/driver.py index 7e0c49885d..d5d56e4cf2 100644 --- a/src/calibre/devices/mtp/unix/driver.py +++ b/src/calibre/devices/mtp/unix/driver.py @@ -159,7 +159,7 @@ class MTP_DEVICE(MTPDeviceBase): except BlacklistedDevice: p('This device has been blacklisted by the user') continue - except: + except Exception: p('Opening device failed:') p(traceback.format_exc()) return False diff --git a/src/calibre/devices/mtp/windows/driver.py b/src/calibre/devices/mtp/windows/driver.py index e3d46eab16..983681463e 100644 --- a/src/calibre/devices/mtp/windows/driver.py +++ b/src/calibre/devices/mtp/windows/driver.py @@ -116,7 +116,7 @@ class MTP_DEVICE(MTPDeviceBase): self.last_refresh_devices_time = time.time() try: pnp_ids = frozenset(self.wpd.enumerate_devices()) - except: + except Exception: return None self.detected_devices = {dev:self.detected_devices.get(dev, None) @@ -168,7 +168,7 @@ class MTP_DEVICE(MTPDeviceBase): return False try: pnp_ids = frozenset(self.wpd.enumerate_devices()) - except: + except Exception: p('Failed to get list of PNP ids on system') p(traceback.format_exc()) return False @@ -183,7 +183,7 @@ class MTP_DEVICE(MTPDeviceBase): for pnp_id in pnp_ids: try: data = self.wpd.device_info(pnp_id) - except: + except Exception: p('Failed to get data for device:', pnp_id) p(traceback.format_exc()) continue @@ -201,7 +201,7 @@ class MTP_DEVICE(MTPDeviceBase): except BlacklistedDevice: p('This device has been blacklisted by the user') continue - except: + except Exception: p('Open failed:') p(traceback.format_exc()) continue diff --git a/src/calibre/devices/prs505/driver.py b/src/calibre/devices/prs505/driver.py index 6b3d33a16b..bf8fe6c171 100644 --- a/src/calibre/devices/prs505/driver.py +++ b/src/calibre/devices/prs505/driver.py @@ -132,7 +132,7 @@ class PRS505(USBMS): if not os.path.exists(dname): try: os.makedirs(dname, mode=0o777) - except: + except Exception: time.sleep(5) os.makedirs(dname, mode=0o777) with open(cachep, 'wb') as f: @@ -142,7 +142,7 @@ class PRS505(USBMS): ''') fsync(f) return True - except: + except Exception: import traceback traceback.print_exc() return False @@ -237,7 +237,7 @@ class PRS505(USBMS): self._upload_cover(os.path.dirname(p), os.path.splitext(os.path.basename(p))[0], book, p) - except: + except Exception: debug_print('FAILED to upload cover', prefix, book.lpath) else: @@ -266,7 +266,7 @@ class PRS505(USBMS): debug_print('PRS505: uploading cover') try: self._upload_cover(path, filename, metadata, filepath) - except: + except Exception: debug_print('FAILED to upload cover', filepath) def _upload_cover(self, path, filename, metadata, filepath): diff --git a/src/calibre/devices/prs505/sony_cache.py b/src/calibre/devices/prs505/sony_cache.py index c639c78016..277b13304f 100644 --- a/src/calibre/devices/prs505/sony_cache.py +++ b/src/calibre/devices/prs505/sony_cache.py @@ -72,7 +72,7 @@ def strptime(src): def strftime(epoch, zone=time.localtime): try: src = time.strftime('%w, %d %m %Y %H:%M:%S GMT', zone(epoch)).split() - except: + except Exception: src = time.strftime('%w, %d %m %Y %H:%M:%S GMT', zone()).split() src[0] = INVERSE_DAY_MAP[int(src[0][:-1])]+',' @@ -127,7 +127,7 @@ class XMLCache: with open(path, 'wb') as f: f.write(EMPTY_EXT_CACHE) fsync(f) - except: + except Exception: pass if os.access(path, os.W_OK): try: @@ -136,7 +136,7 @@ class XMLCache: xml_to_unicode(f.read(), strip_encoding_pats=True, assume_utf8=True, verbose=DEBUG)[0] ) self.ext_paths[source_id] = path - except: + except Exception: pass # }}} @@ -286,7 +286,7 @@ class XMLCache: id_ = x.get('id') try: id_ = int(id_) - except: + except Exception: x.set('id', '-1') idmap[id_] = '-1' @@ -471,7 +471,7 @@ class XMLCache: if not name: try: name = [t for t in book.tags if t != _('News')][0] - except: + except Exception: name = None if not name: @@ -483,7 +483,7 @@ class XMLCache: pubdate = strftime(book.pubdate.utctimetuple(), zone=lambda x: x) record.set('publicationDate', pubdate) - except: + except Exception: pass def rebuild_collections(self, booklist, bl_index): @@ -616,7 +616,7 @@ class XMLCache: # matches. Use localtime if the case of a tie, and hope it is right. try: timestamp = os.path.getmtime(path) - except: + except Exception: debug_print('Failed to get timestamp for:', path) timestamp = time.time() rec_date = record.get('date', None) @@ -630,7 +630,7 @@ class XMLCache: def record_set(k, v): try: record.set(k, clean(v)) - except: + except Exception: # v is not suitable for XML, ignore pass @@ -656,7 +656,7 @@ class XMLCache: record.set('date', clean(date)) try: record.set('size', clean(str(os.stat(path).st_size))) - except: + except Exception: record.set('size', '0') title = book.title if book.title else _('Unknown') record_set('title', title) @@ -731,7 +731,7 @@ class XMLCache: try: raw = etree.tostring(self.ext_roots[i], encoding='UTF-8', xml_declaration=True) - except: + except Exception: continue raw = raw.replace(b"", b'') @@ -768,7 +768,7 @@ class XMLCache: num = int(id_) if num > ans: ans = num - except: + except Exception: continue return ans diff --git a/src/calibre/devices/prst1/driver.py b/src/calibre/devices/prst1/driver.py index f205c18d6c..0e230b2ba9 100644 --- a/src/calibre/devices/prst1/driver.py +++ b/src/calibre/devices/prst1/driver.py @@ -470,7 +470,7 @@ class PRST1(USBMS): author = newmi.authors[0] else: author = authors_to_string(newmi.authors) - except: + except Exception: author = _('Unknown') title = newmi.title or _('Unknown') @@ -796,7 +796,7 @@ class PRST1(USBMS): if not name: try: name = [t for t in book.tags if t != _('News')][0] - except: + except Exception: name = None if not name: @@ -805,7 +805,7 @@ class PRST1(USBMS): pubdate = None try: pubdate = int(time.mktime(book.pubdate.timetuple()) * 1000) - except: + except Exception: pass cursor = connection.cursor() diff --git a/src/calibre/devices/smart_device_app/driver.py b/src/calibre/devices/smart_device_app/driver.py index 45cc480ec6..4eb2b741ca 100644 --- a/src/calibre/devices/smart_device_app/driver.py +++ b/src/calibre/devices/smart_device_app/driver.py @@ -74,7 +74,7 @@ class ConnectionListener(Thread): def _close_socket(self, the_socket): try: the_socket.shutdown(socket.SHUT_RDWR) - except: + except Exception: # the shutdown can fail if the socket isn't fully connected. Ignore it pass the_socket.close() @@ -86,7 +86,7 @@ class ConnectionListener(Thread): while self.keep_running: try: time.sleep(1) - except: + except Exception: # Happens during interpreter shutdown break @@ -131,7 +131,7 @@ class ConnectionListener(Thread): ',' + str(self.driver.port)).encode('utf-8') self.driver._debug('received broadcast', packet, message) self.driver.broadcast_socket.sendto(message, remote) - except: + except Exception: pass else: break @@ -415,7 +415,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): prints('', printable, end='') else: prints('', a, end='') - except: + except Exception: prints('', 'value too long', end='') print() self.debug_time = time.time() @@ -461,7 +461,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): # Fall back to the ch if the UUID doesn't exist. if self.client_wants_uuid_file_names and mdata.uuid: return (mdata.uuid + ext) - except: + except Exception: pass dotless_ext = ext[1:] if len(ext) > 0 else ext @@ -481,7 +481,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: p = mdata.pubdate date = (p.year, p.month, p.day) - except: + except Exception: today = time.localtime() date = (today[0], today[1], today[2]) template = f'{{title}}_{date[0]}-{date[1]}-{date[2]}' @@ -572,7 +572,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: v = self.device_socket.recv(length) return v - except: + except Exception: self._close_device_socket() raise @@ -621,7 +621,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self._close_device_socket() raise time.sleep(0.1) # lets not hammer the OS too hard - except: + except Exception: self._close_device_socket() raise @@ -656,7 +656,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self._debug('device went away') self._close_device_socket() raise ControlError(desc='Device closed the network connection') - except: + except Exception: self._debug('other exception') traceback.print_exc() self._close_device_socket() @@ -684,7 +684,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self._debug('device went away') self._close_device_socket() raise ControlError(desc='Device closed the network connection') - except: + except Exception: self._debug('other exception') traceback.print_exc() self._close_device_socket() @@ -745,7 +745,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): if key in self.device_book_cache and self.device_book_cache[key]['book'].last_modified == lastmod: self.device_book_cache[key]['last_used'] = now() return self.device_book_cache[key]['book'].deepcopy(lambda: SDBook('', '')) - except: + except Exception: traceback.print_exc() return None @@ -763,7 +763,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): if bool(v_thumb) != bool(b_thumb): return False return not v_thumb or v_thumb[1] == b_thumb[1] - except: + except Exception: traceback.print_exc() return False @@ -775,7 +775,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): continue if metadata.get('lpath', '').endswith(ext): return metadata - except: + except Exception: traceback.print_exc() return None @@ -788,7 +788,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): '_metadata_cache.pickle') if os.path.exists(old_cache_file_name): os.remove(old_cache_file_name) - except: + except Exception: pass try: @@ -797,7 +797,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): '_metadata_cache.json') if os.path.exists(old_cache_file_name): os.remove(old_cache_file_name) - except: + except Exception: pass cache_file_name = os.path.join(cache_dir(), @@ -825,14 +825,14 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self.known_metadata[lpath] = metadata count += 1 self._debug('loaded', count, 'cache items') - except: + except Exception: traceback.print_exc() self.device_book_cache = defaultdict(dict) self.known_metadata = {} try: if os.path.exists(cache_file_name): os.remove(cache_file_name) - except: + except Exception: traceback.print_exc() def _write_metadata_cache(self): @@ -862,7 +862,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): from calibre.utils.filenames import atomic_rename atomic_rename(fd.name, prefix + '.json') - except: + except Exception: traceback.print_exc() def _make_metadata_cache_key(self, uuid, lpath_or_ext): @@ -904,7 +904,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): def _close_socket(self, the_socket): try: the_socket.shutdown(socket.SHUT_RDWR) - except: + except Exception: # the shutdown can fail if the socket isn't fully connected. Ignore it pass the_socket.close() @@ -913,7 +913,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): if self.device_socket is not None: try: self._close_socket(self.device_socket) - except: + except Exception: pass self.device_socket = None self._write_metadata_cache() @@ -930,7 +930,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): except OSError: self._debug('socket error on port', port) port = 0 - except: + except Exception: self._debug('Unknown exception while attaching port to socket') traceback.print_exc() raise @@ -972,7 +972,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): # protocol, this can only be a disconnect notification. Fall # through and actually try to talk to the client. # This will usually toss an exception if the socket is gone. - except: + except Exception: pass if (self.settings().extra_customization[self.OPT_AUTODISCONNECT] and self.noop_counter > self.DISCONNECT_AFTER_N_SECONDS): @@ -983,7 +983,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: if self._call_client('NOOP', {})[0] is None: self._close_device_socket() - except: + except Exception: self._close_device_socket() return self if self.is_connected else None @@ -1003,7 +1003,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self.connection_attempts[peer] = attempts + 1 except InitialConnectionError: raise - except: + except Exception: pass except queue.Empty: self.is_connected = False @@ -1136,7 +1136,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self._call_client('DISPLAY_MESSAGE', {'messageKind': self.MESSAGE_UPDATE_NEEDED, 'lastestKnownAppVersion': self.CURRENT_CC_VERSION}) - except: + except Exception: pass self.max_book_packet_len = result.get('maxBookContentPacketLen', @@ -1190,7 +1190,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): {'messageKind': self.MESSAGE_PASSWORD_ERROR, 'currentLibraryName': self.current_library_name, 'currentLibraryUUID': library_uuid}) - except: + except Exception: pass self._close_device_socket() # Don't bother with a message. The user will be informed on @@ -1199,7 +1199,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: peer = self.device_socket.getpeername()[0] self.connection_attempts[peer] = 0 - except: + except Exception: pass return True @@ -1342,7 +1342,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): self.device_book_cache.pop(key, None) self.known_metadata.pop(lpath, None) count_of_cache_items_deleted += 1 - except: + except Exception: self._debug('Exception while deleting book from caches', lpath) traceback.print_exc() self._debug('removed', count_of_cache_items_deleted, 'books from caches') @@ -1374,7 +1374,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): book.set('_new_book_', True) else: self._set_known_metadata(book) - except: + except Exception: self._debug('exception retrieving metadata for book', result.get('title', 'Unknown')) traceback.print_exc() else: @@ -1446,7 +1446,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: if bool(self.is_read_sync_col): book.set('_is_read_', book.get(self.is_read_sync_col, None)) - except: + except Exception: self._debug('failed to set local copy of _is_read_') traceback.print_exc() @@ -1454,7 +1454,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): if bool(self.is_read_date_sync_col): book.set('_last_read_date_', book.get(self.is_read_date_sync_col, None)) - except: + except Exception: self._debug('failed to set local copy of _last_read_date_') traceback.print_exc() # Write the cache here so that if we are interrupted on disconnect then the @@ -1655,7 +1655,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): if cc_mtime < calibre_mtime: book.set('_format_mtime_', isoformat(self.now)) return posixpath.basename(book.lpath), False - except: + except Exception: self._debug('exception checking if must send format', book.title) traceback.print_exc() return None, False @@ -1770,7 +1770,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): book.get('title', 'huh?'), 'to', calibre_val) book.set('_force_send_metadata_', True) force_return_changed_books = True - except: + except Exception: self._debug('exception special syncing is_read', self.is_read_sync_col) traceback.print_exc() @@ -1793,7 +1793,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): book.get('title', 'huh?'), 'to', calibre_val) book.set('_force_send_metadata_', True) force_return_changed_books = True - except: + except Exception: self._debug('exception special syncing is_read_date', self.is_read_sync_col) traceback.print_exc() @@ -1816,7 +1816,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): {id_: is_read}) if self.set_temp_mark_when_syncing_read: db.data.toggle_marked_ids({id_}) - except: + except Exception: self._debug('exception standard syncing is_read', self.is_read_sync_col) traceback.print_exc() @@ -1833,7 +1833,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): {id_: is_read_date}) if self.set_temp_mark_when_syncing_read: db.data.toggle_marked_ids({id_}) - except: + except Exception: self._debug('Exception standard syncing is_read_date', self.is_read_date_sync_col) traceback.print_exc() @@ -1892,7 +1892,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): compression_quality_ok = False else: self.THUMBNAIL_COMPRESSION_QUALITY = cq - except: + except Exception: compression_quality_ok = False if not compression_quality_ok: self.THUMBNAIL_COMPRESSION_QUALITY = 70 @@ -1905,7 +1905,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: self.listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) set_socket_inherit(self.listen_socket, False) - except: + except Exception: traceback.print_exc() message = 'creation of listen socket failed' self._debug(message) @@ -1916,7 +1916,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): if self.settings().extra_customization[self.OPT_USE_PORT]: try: opt_port = int(self.settings().extra_customization[self.OPT_PORT_NUMBER]) - except: + except Exception: message = _('Invalid port in options: %s')% \ self.settings().extra_customization[self.OPT_PORT_NUMBER] self._debug(message) @@ -1944,7 +1944,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: self.listen_socket.listen(1) - except: + except Exception: message = f'listen on port {port} failed' self._debug(message) self._close_listen_socket() @@ -1955,7 +1955,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): publish_zeroconf('calibre smart device client', '_calibresmartdeviceapp._tcp', port, {}, use_ip_address=ip_addr, strict=False) - except: + except Exception: self._debug('registration with bonjour failed') traceback.print_exc() @@ -1967,7 +1967,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: self.broadcast_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) set_socket_inherit(self.broadcast_socket, False) - except: + except Exception: message = 'creation of broadcast socket failed. This is not fatal.' self._debug(message) self.broadcast_socket = None @@ -2001,7 +2001,7 @@ class SMART_DEVICE_APP(DeviceConfig, DevicePlugin): try: unpublish_zeroconf('calibre smart device client', '_calibresmartdeviceapp._tcp', self.port, {}) - except: + except Exception: self._debug('deregistration with bonjour failed') traceback.print_exc() self._close_listen_socket() diff --git a/src/calibre/devices/usbms/books.py b/src/calibre/devices/usbms/books.py index a37cca5c3d..8fd0830a0b 100644 --- a/src/calibre/devices/usbms/books.py +++ b/src/calibre/devices/usbms/books.py @@ -67,7 +67,7 @@ class Book(Metadata): self.size = size # will be set later if None try: self.datetime = time.gmtime(os.path.getctime(self.path)) - except: + except Exception: self.datetime = time.gmtime() if other: self.smart_update(other) diff --git a/src/calibre/devices/usbms/device.py b/src/calibre/devices/usbms/device.py index 7622baa975..8fc114bbd1 100644 --- a/src/calibre/devices/usbms/device.py +++ b/src/calibre/devices/usbms/device.py @@ -550,7 +550,7 @@ class Device(DeviceConfig, DevicePlugin): ok[node] = True else: ok[node] = False - except: + except Exception: ok[node] = False if is_debugging() and not ok[node]: print(f'\nIgnoring the node: {node} as could not read size from: {sz}') @@ -580,7 +580,7 @@ class Device(DeviceConfig, DevicePlugin): try: with open(sz, 'rb') as szf: sz = int(szf.read().decode('utf-8')) - except: + except Exception: continue if sz > 0: nodes.append((x.split('/')[-1], sz)) @@ -602,7 +602,7 @@ class Device(DeviceConfig, DevicePlugin): from calibre.devices.udisks import mount mount(node) return 0 - except: + except Exception: print('Udisks mount call failed:') import traceback traceback.print_exc() @@ -658,12 +658,12 @@ class Device(DeviceConfig, DevicePlugin): try: with open(path, 'wb'): ro = False - except: + except Exception: pass else: try: os.remove(path) - except: + except Exception: pass if is_debugging() and ro: print('\nThe mountpoint', mp, 'is readonly, ignoring it') @@ -889,7 +889,7 @@ class Device(DeviceConfig, DevicePlugin): if x is not None: try: subprocess.Popen(self.OSX_EJECT_COMMAND + [x]) - except: + except Exception: pass def eject_linux(self): @@ -898,7 +898,7 @@ class Device(DeviceConfig, DevicePlugin): for d in drives: try: umount(d) - except: + except Exception: pass for d in drives: try: @@ -918,22 +918,22 @@ class Device(DeviceConfig, DevicePlugin): if islinux: try: self.eject_linux() - except: + except Exception: pass if isfreebsd: try: self.eject_freebsd() - except: + except Exception: pass if iswindows: try: self.eject_windows() - except: + except Exception: pass if ismacos: try: self.eject_osx() - except: + except Exception: pass self._main_prefix = self._card_a_prefix = self._card_b_prefix = None self.on_device_close() @@ -945,7 +945,7 @@ class Device(DeviceConfig, DevicePlugin): if islinux: try: self.linux_post_yank() - except: + except Exception: import traceback traceback.print_exc() self._main_prefix = self._card_a_prefix = self._card_b_prefix = None diff --git a/src/calibre/devices/usbms/driver.py b/src/calibre/devices/usbms/driver.py index f2598e047d..05884abfc2 100644 --- a/src/calibre/devices/usbms/driver.py +++ b/src/calibre/devices/usbms/driver.py @@ -115,7 +115,7 @@ class USBMS(CLI, Device): with open(os.path.join(prefix, self.DRIVEINFO), 'rb') as f: try: driveinfo = json.loads(f.read(), object_hook=from_json) - except: + except Exception: driveinfo = None driveinfo = self._update_driveinfo_record(driveinfo, prefix, location_code, name) @@ -252,7 +252,7 @@ class USBMS(CLI, Device): if bl.add_book(self.book_from_path(prefix, lpath), replace_metadata=False): changed = True - except: # Probably a filename encoding error + except Exception: # Probably a filename encoding error import traceback traceback.print_exc() return changed @@ -333,7 +333,7 @@ class USBMS(CLI, Device): self.upload_cover(os.path.dirname(filepath), os.path.splitext(os.path.basename(filepath))[0], mdata, filepath) - except: # Failure to upload cover is not catastrophic + except Exception: # Failure to upload cover is not catastrophic import traceback traceback.print_exc() @@ -413,7 +413,7 @@ class USBMS(CLI, Device): if self.SUPPORTS_SUB_DIRS: try: os.removedirs(os.path.dirname(path)) - except: + except Exception: pass def delete_books(self, paths, end_session=True): @@ -504,7 +504,7 @@ class USBMS(CLI, Device): try: with open(cache_file, 'rb') as f: json_codec.decode_from_file(f, bl, cls.book_class, prefix) - except: + except Exception: import traceback traceback.print_exc() bl = [] diff --git a/src/calibre/devices/user_defined/driver.py b/src/calibre/devices/user_defined/driver.py index c1f421b561..5d021a6b38 100644 --- a/src/calibre/devices/user_defined/driver.py +++ b/src/calibre/devices/user_defined/driver.py @@ -106,7 +106,7 @@ class USER_DEFINED(USBMS): self.WINDOWS_CARD_A_MEM = e[self.OPT_USB_WINDOWS_CA_ID] + '&' self.EBOOK_DIR_MAIN = e[self.OPT_MAIN_MEM_FOLDER] self.EBOOK_DIR_CARD_A = e[self.OPT_CARD_A_FOLDER] - except: + except Exception: import traceback traceback.print_exc() self.plugin_needs_delayed_initialization = False diff --git a/src/calibre/devices/utils.py b/src/calibre/devices/utils.py index 0c8a10d329..66d1780f89 100644 --- a/src/calibre/devices/utils.py +++ b/src/calibre/devices/utils.py @@ -59,7 +59,7 @@ def build_template_regexp(template): try: template = template.rpartition('/')[2] return re.compile(re.sub(r'{([^}]*)}', f, template) + r'([_\d]*$)') - except: + except Exception: prints(f'Failed to parse template: {template!r}') template = '{title} - {authors}' return re.compile(re.sub(r'{([^}]*)}', f, template) + r'([_\d]*$)') @@ -88,7 +88,7 @@ def create_upload_path(mdata, fname, template, sanitize, try: p = mdata.pubdate date = (p.year, p.month, p.day) - except: + except Exception: today = time.localtime() date = (today[0], today[1], today[2]) template = f'{{title}}_{date[0]}-{date[1]}-{date[2]}' diff --git a/src/calibre/ebooks/chm/metadata.py b/src/calibre/ebooks/chm/metadata.py index 3e43f086e3..decb4af94e 100644 --- a/src/calibre/ebooks/chm/metadata.py +++ b/src/calibre/ebooks/chm/metadata.py @@ -81,7 +81,7 @@ def _get_comments(soup): # and pages often comes as '(\d+ pages)' pages = re.search(r'\d+', pages).group(0) return f'Published {date}, {pages} pages.' - except: + except Exception: pass return None @@ -108,7 +108,7 @@ def _get_cover(soup, rdr): # interestingly, occasionally the only image without height # or width attrs is the cover... r[0] = img['src'] - except: + except Exception: # Probably invalid width, height aattributes, ignore continue if r: @@ -118,11 +118,11 @@ def _get_cover(soup, rdr): if ans is not None: try: ans = rdr.GetFile(ans) - except: + except Exception: ans = rdr.root + '/' + ans try: ans = rdr.GetFile(ans) - except: + except Exception: ans = None if ans is not None: import io @@ -132,7 +132,7 @@ def _get_cover(soup, rdr): try: Image.open(io.BytesIO(ans)).convert('RGB').save(buf, 'JPEG') ans = buf.getvalue() - except: + except Exception: ans = None return ans @@ -147,7 +147,7 @@ def get_metadata_from_reader(rdr): x = rdr.GetEncoding() codecs.lookup(x) enc = x - except: + except Exception: enc = 'cp1252' title = force_unicode(title, enc) authors = _get_authors(home) diff --git a/src/calibre/ebooks/chm/reader.py b/src/calibre/ebooks/chm/reader.py index d4561718f9..4669749866 100644 --- a/src/calibre/ebooks/chm/reader.py +++ b/src/calibre/ebooks/chm/reader.py @@ -187,7 +187,7 @@ class CHMReader(CHMFile): self._ensure_dir(lpath) try: data = self.GetFile(path) - except: + except Exception: self.log.exception(f'Failed to extract {path} from CHM, ignoring') continue if lpath.find(';') != -1: @@ -199,9 +199,9 @@ class CHMReader(CHMFile): try: if 'html' in guess_mimetype(path)[0]: html_files.add(lpath) - except: + except Exception: pass - except: + except Exception: if iswindows and len(lpath) > 250: self.log.warn(f'{path!r} filename too long, skipping') continue @@ -278,14 +278,14 @@ class CHMReader(CHMFile): alt = t[0].img['alt'].lower() if alt.find('prev') != -1 or alt.find('next') != -1 or alt.find('team') != -1: t[0].extract() - except: + except Exception: pass if (t[-1].nextSibling is None or t[-1].nextSibling.nextSibling is None): try: alt = t[-1].img['alt'].lower() if alt.find('prev') != -1 or alt.find('next') != -1 or alt.find('team') != -1: t[-1].extract() - except: + except Exception: pass # for some very odd reason each page's content appears to be in a table # too. and this table has sub-tables for random asides... grr. @@ -325,7 +325,7 @@ class CHMReader(CHMFile): tables[0].extract() while tdContents: soup.body.insert(tableIdx, tdContents.pop()) - except: + except Exception: pass # do not prettify, it would reformat the 
 tags!
         try:
diff --git a/src/calibre/ebooks/comic/input.py b/src/calibre/ebooks/comic/input.py
index 6771bdc42d..3d47605783 100644
--- a/src/calibre/ebooks/comic/input.py
+++ b/src/calibre/ebooks/comic/input.py
@@ -169,7 +169,7 @@ class PageProcessor(list):  # {{{
                 if self.opts.comic_image_size:
                     SCRWIDTH, SCRHEIGHT = map(int, [x.strip() for x in
                         self.opts.comic_image_size.split('x')])
-            except:
+            except Exception:
                 pass  # Ignore
 
             if self.opts.keep_aspect_ratio:
@@ -253,7 +253,7 @@ def render_pages(tasks, dest, opts, notification=lambda x, y: x):
         try:
             pages.extend(PageProcessor(path, dest, opts, num))
             msg = _('Rendered %s')%path
-        except:
+        except Exception:
             failures.append(path)
             msg = _('Failed %s')%path
             if opts.verbose:
diff --git a/src/calibre/ebooks/conversion/cli.py b/src/calibre/ebooks/conversion/cli.py
index cba93eadbf..e811d84e7b 100644
--- a/src/calibre/ebooks/conversion/cli.py
+++ b/src/calibre/ebooks/conversion/cli.py
@@ -318,7 +318,7 @@ def create_option_parser(args, log):
         for title in titles:
             try:
                 log('\t'+title)
-            except:
+            except Exception:
                 log('\t'+repr(title))
         log(f'{len(titles)} recipes available')
         raise SystemExit(0)
@@ -370,7 +370,7 @@ def read_sr_patterns(path, log=None):
             line = line.replace('\ue123', '\n')
             try:
                 re.compile(line)
-            except:
+            except Exception:
                 msg = f'Invalid regular expression: {line!r} from file: {path!r}'
                 if log is not None:
                     log.error(msg)
diff --git a/src/calibre/ebooks/conversion/plugins/epub_input.py b/src/calibre/ebooks/conversion/plugins/epub_input.py
index 25051692e9..0b4b71b214 100644
--- a/src/calibre/ebooks/conversion/plugins/epub_input.py
+++ b/src/calibre/ebooks/conversion/plugins/epub_input.py
@@ -59,7 +59,7 @@ class EPUBInput(InputFormatPlugin):
                 try:
                     key = item.text.rpartition(':')[-1]
                     key = uuid.UUID(key).bytes
-                except:
+                except Exception:
                     import traceback
                     traceback.print_exc()
                     key = None
@@ -78,7 +78,7 @@ class EPUBInput(InputFormatPlugin):
                     self._encrypted_font_uris.append(uri)
                     decrypt_font(tkey, path, algorithm)
             return True
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         return False
@@ -265,7 +265,7 @@ class EPUBInput(InputFormatPlugin):
         try:
             zf = ZipFile(stream)
             zf.extractall(os.getcwd())
-        except:
+        except Exception:
             log.exception('EPUB appears to be invalid ZIP file, trying a'
                     ' more forgiving ZIP parser')
             from calibre.utils.localunzip import extractall
diff --git a/src/calibre/ebooks/conversion/plugins/epub_output.py b/src/calibre/ebooks/conversion/plugins/epub_output.py
index 83a09ae46c..7cdf48de04 100644
--- a/src/calibre/ebooks/conversion/plugins/epub_output.py
+++ b/src/calibre/ebooks/conversion/plugins/epub_output.py
@@ -467,7 +467,7 @@ class EPUBOutput(OutputFormatPlugin):
                         prior = next(br.itersiblings(preceding=True))
                         priortag = barename(prior.tag)
                         priortext = prior.tail
-                    except:
+                    except Exception:
                         priortag = 'body'
                         priortext = body.text
                     if priortext:
diff --git a/src/calibre/ebooks/conversion/plugins/html_input.py b/src/calibre/ebooks/conversion/plugins/html_input.py
index 04a2df3c00..3b7f2ce92f 100644
--- a/src/calibre/ebooks/conversion/plugins/html_input.py
+++ b/src/calibre/ebooks/conversion/plugins/html_input.py
@@ -253,7 +253,7 @@ class HTMLInput(InputFormatPlugin):
         if not isinstance(link_, str):
             try:
                 link_ = link_.decode('utf-8', 'error')
-            except:
+            except Exception:
                 self.log.warn(f'Failed to decode link {link_!r}. Ignoring')
                 return None, None
         if self.root_dir_for_absolute_links and link_.startswith('/'):
@@ -261,7 +261,7 @@ class HTMLInput(InputFormatPlugin):
             base = self.root_dir_for_absolute_links
         try:
             l = Link(link_, base if base else os.getcwd())
-        except:
+        except Exception:
             self.log.exception(f'Failed to process link: {link_!r}')
             return None, None
         if l.path is None:
@@ -289,7 +289,7 @@ class HTMLInput(InputFormatPlugin):
             if base and not os.path.isabs(link):
                 link = os.path.join(base, link)
             link = os.path.abspath(link)
-        except:
+        except Exception:
             return link_
         if not os.access(link, os.R_OK):
             corrected = False
diff --git a/src/calibre/ebooks/conversion/plugins/htmlz_output.py b/src/calibre/ebooks/conversion/plugins/htmlz_output.py
index 98b5c6057b..44fbfb5f90 100644
--- a/src/calibre/ebooks/conversion/plugins/htmlz_output.py
+++ b/src/calibre/ebooks/conversion/plugins/htmlz_output.py
@@ -115,7 +115,7 @@ class HTMLZOutput(OutputFormatPlugin):
                     with open(cover_path, 'w') as cf:
                         cf.write('')
                     save_cover_data_to(cover_data, cover_path)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
 
diff --git a/src/calibre/ebooks/conversion/plugins/lrf_output.py b/src/calibre/ebooks/conversion/plugins/lrf_output.py
index bf5a1623db..0e47b12fe9 100644
--- a/src/calibre/ebooks/conversion/plugins/lrf_output.py
+++ b/src/calibre/ebooks/conversion/plugins/lrf_output.py
@@ -17,7 +17,7 @@ class LRFOptions:
         def f2s(f):
             try:
                 return str(f[0])
-            except:
+            except Exception:
                 return ''
         m = oeb.metadata
         for x in ('left', 'top', 'right', 'bottom'):
diff --git a/src/calibre/ebooks/conversion/plugins/mobi_input.py b/src/calibre/ebooks/conversion/plugins/mobi_input.py
index 177df9f0bd..0c7d2faba4 100644
--- a/src/calibre/ebooks/conversion/plugins/mobi_input.py
+++ b/src/calibre/ebooks/conversion/plugins/mobi_input.py
@@ -30,7 +30,7 @@ class MOBIInput(InputFormatPlugin):
             if mr.kf8_type is None:
                 mr.extract_content('.', parse_cache)
 
-        except:
+        except Exception:
             mr = MobiReader(stream, log, options.input_encoding,
                         options.debug_pipeline, try_extra_data_fix=True)
             if mr.kf8_type is None:
diff --git a/src/calibre/ebooks/conversion/plugins/oeb_output.py b/src/calibre/ebooks/conversion/plugins/oeb_output.py
index c106b2b508..fba7bc2543 100644
--- a/src/calibre/ebooks/conversion/plugins/oeb_output.py
+++ b/src/calibre/ebooks/conversion/plugins/oeb_output.py
@@ -36,12 +36,12 @@ class OEBOutput(OutputFormatPlugin):
                     if key == OPF_MIME:
                         try:
                             self.workaround_nook_cover_bug(root)
-                        except:
+                        except Exception:
                             self.log.exception('Something went wrong while trying to'
                                     ' workaround Nook cover bug, ignoring')
                         try:
                             self.workaround_pocketbook_cover_bug(root)
-                        except:
+                        except Exception:
                             self.log.exception('Something went wrong while trying to'
                                     ' workaround Pocketbook cover bug, ignoring')
                         self.migrate_lang_code(root)
diff --git a/src/calibre/ebooks/conversion/plugins/pdf_output.py b/src/calibre/ebooks/conversion/plugins/pdf_output.py
index 79f9ee0293..e7b0a25dd7 100644
--- a/src/calibre/ebooks/conversion/plugins/pdf_output.py
+++ b/src/calibre/ebooks/conversion/plugins/pdf_output.py
@@ -216,7 +216,7 @@ class PDFOutput(OutputFormatPlugin):
                     try:
                         s = rule.style
                         src = s.getProperty('src').propertyValue[0].uri
-                    except:
+                    except Exception:
                         continue
                     path = item.abshref(src)
                     ff = self.oeb.manifest.hrefs.get(urlnormalize(path), None)
@@ -228,7 +228,7 @@ class PDFOutput(OutputFormatPlugin):
                         processed.add(path)
                         try:
                             nraw = remove_embed_restriction(raw)
-                        except:
+                        except Exception:
                             continue
                         if nraw != raw:
                             ff.data = nraw
diff --git a/src/calibre/ebooks/conversion/plugins/recipe_input.py b/src/calibre/ebooks/conversion/plugins/recipe_input.py
index 9ebac38d85..449eb1ddcc 100644
--- a/src/calibre/ebooks/conversion/plugins/recipe_input.py
+++ b/src/calibre/ebooks/conversion/plugins/recipe_input.py
@@ -113,7 +113,7 @@ class RecipeInput(InputFormatPlugin):
                         log.warn(
                         'Downloaded recipe needs calibre version at least: {}'.format('.'.join(recipe.requires_version)))
                         builtin = True
-                except:
+                except Exception:
                     log.exception('Failed to compile downloaded recipe. Falling '
                             'back to builtin one')
                     builtin = True
diff --git a/src/calibre/ebooks/conversion/plugins/rtf_input.py b/src/calibre/ebooks/conversion/plugins/rtf_input.py
index b0b813406c..5c4d347f14 100644
--- a/src/calibre/ebooks/conversion/plugins/rtf_input.py
+++ b/src/calibre/ebooks/conversion/plugins/rtf_input.py
@@ -66,7 +66,7 @@ class RTFInput(InputFormatPlugin):
                 run_lev = 4
                 indent_out = 1
                 self.log('Running RTFParser in debug mode')
-            except:
+            except Exception:
                 self.log.warn('Impossible to run RTFParser in debug mode')
         parser = ParseRtf(
             in_file=stream,
@@ -154,7 +154,7 @@ class RTFInput(InputFormatPlugin):
         for count, val in iteritems(imap):
             try:
                 imap[count] = self.convert_image(val)
-            except:
+            except Exception:
                 self.log.exception('Failed to convert', val)
         return imap
 
@@ -270,7 +270,7 @@ class RTFInput(InputFormatPlugin):
             imap = {}
             try:
                 imap = self.extract_images(d[0])
-            except:
+            except Exception:
                 self.log.exception('Failed to extract images...')
 
         self.log('Parsing XML...')
diff --git a/src/calibre/ebooks/conversion/plugins/snb_input.py b/src/calibre/ebooks/conversion/plugins/snb_input.py
index af5f7e625d..3df5283a77 100644
--- a/src/calibre/ebooks/conversion/plugins/snb_input.py
+++ b/src/calibre/ebooks/conversion/plugins/snb_input.py
@@ -37,7 +37,7 @@ class SNBInput(InputFormatPlugin):
         snbFile = SNBFile()
         try:
             snbFile.Parse(stream)
-        except:
+        except Exception:
             raise ValueError('Invalid SNB file')
         if not snbFile.IsValid():
             log.debug('Invalid SNB file')
diff --git a/src/calibre/ebooks/conversion/plumber.py b/src/calibre/ebooks/conversion/plumber.py
index 1866abef2e..b59d67c0df 100644
--- a/src/calibre/ebooks/conversion/plumber.py
+++ b/src/calibre/ebooks/conversion/plumber.py
@@ -894,7 +894,7 @@ OptionRecommendation(name='search_replace',
                 elif x in ('timestamp', 'pubdate'):
                     try:
                         val = parse_date(val, assume_utc=x=='timestamp')
-                    except:
+                    except Exception:
                         self.log.exception(_('Failed to parse date/time') + ' ' + str(val))
                         continue
                 setattr(mi, x, val)
@@ -987,7 +987,7 @@ OptionRecommendation(name='search_replace',
                 for x in ('username', 'password'):
                     odict.pop(x, None)
                 self.log.debug(pprint.pformat(odict))
-            except:
+            except Exception:
                 self.log.exception('Failed to get resolved conversion options')
 
     def flush(self):
diff --git a/src/calibre/ebooks/conversion/preprocess.py b/src/calibre/ebooks/conversion/preprocess.py
index 37e29203d9..1e20ca578a 100644
--- a/src/calibre/ebooks/conversion/preprocess.py
+++ b/src/calibre/ebooks/conversion/preprocess.py
@@ -212,7 +212,7 @@ class Dehyphenator:
         secondhalf = match.group('secondpart')
         try:
             wraptags = match.group('wraptags')
-        except:
+        except Exception:
             wraptags = ''
         hyphenated = str(firsthalf) + '-' + str(secondhalf)
         dehyphenated = str(firsthalf) + str(secondhalf)
@@ -226,7 +226,7 @@ class Dehyphenator:
             self.log('lookup word is: '+lookupword+', orig is: ' + hyphenated)
         try:
             searchresult = self.html.find(lookupword.lower())
-        except:
+        except Exception:
             return hyphenated
         if self.format == 'html_cleanup' or self.format == 'txt_cleanup':
             if self.html.find(lookupword) != -1 or searchresult != -1:
@@ -305,7 +305,7 @@ class CSSPreProcessor:
         end = match.group('end')
         try:
             start = match.group('start')
-        except:
+        except Exception:
             start = ''
         if end == ';':
             end = ''
diff --git a/src/calibre/ebooks/conversion/utils.py b/src/calibre/ebooks/conversion/utils.py
index 6518821379..b8ecffbb4d 100644
--- a/src/calibre/ebooks/conversion/utils.py
+++ b/src/calibre/ebooks/conversion/utils.py
@@ -601,7 +601,7 @@ class HeuristicProcessor:
                 if replacement_break.find('width') != -1:
                     try:
                         width = int(re.sub(r'.*?width(:|=)(?P\d+).*', r'\g', replacement_break))
-                    except:
+                    except Exception:
                         scene_break = hr_open+'
'
                         self.log.warn('Invalid replacement scene break'
                                 ' expression, using default')
@@ -733,7 +733,7 @@ class HeuristicProcessor:
         # other types of processing are attempted
         try:
             self.totalwords = self.get_word_count(html)
-        except:
+        except Exception:
             self.log.warn("Can't get wordcount")
 
         if self.totalwords < 50:
diff --git a/src/calibre/ebooks/docx/cleanup.py b/src/calibre/ebooks/docx/cleanup.py
index 5fed992ad1..4cee3a633a 100644
--- a/src/calibre/ebooks/docx/cleanup.py
+++ b/src/calibre/ebooks/docx/cleanup.py
@@ -230,7 +230,7 @@ def cleanup_markup(log, root, styles, dest_dir, detect_cover, XPath, uuid):
                 try:
                     with open(path, 'rb') as imf:
                         fmt, width, height = identify(imf)
-                except:
+                except Exception:
                     width, height, fmt = 0, 0, None
                 del fmt
                 try:
diff --git a/src/calibre/ebooks/docx/container.py b/src/calibre/ebooks/docx/container.py
index 28b7981412..a043f3a8f1 100644
--- a/src/calibre/ebooks/docx/container.py
+++ b/src/calibre/ebooks/docx/container.py
@@ -111,7 +111,7 @@ class DOCX:
         try:
             zf = ZipFile(stream)
             zf.extractall(self.tdir)
-        except:
+        except Exception:
             self.log.exception('DOCX appears to be invalid ZIP file, trying a'
                     ' more forgiving ZIP parser')
             from calibre.utils.localunzip import extractall
diff --git a/src/calibre/ebooks/epub/periodical.py b/src/calibre/ebooks/epub/periodical.py
index f4f599ef8c..87f9efabf5 100644
--- a/src/calibre/ebooks/epub/periodical.py
+++ b/src/calibre/ebooks/epub/periodical.py
@@ -87,17 +87,17 @@ def sony_metadata(oeb):
     try:
         pt = str(oeb.metadata.publication_type[0])
         short_title = ':'.join(pt.split(':')[2:])
-    except:
+    except Exception:
         pass
 
     try:
         date = parse_date(str(m.date[0]),
                 as_utc=False).strftime('%Y-%m-%d')
-    except:
+    except Exception:
         date = strftime('%Y-%m-%d')
     try:
         language = str(m.language[0]).replace('_', '-')
-    except:
+    except Exception:
         language = 'en'
     short_title = xml(short_title, True)
 
@@ -115,7 +115,7 @@ def sony_metadata(oeb):
 
     try:
         base_id = str(list(filter(cal_id, m.identifier))[0])
-    except:
+    except Exception:
         base_id = str(uuid4())
 
     toc = oeb.toc
diff --git a/src/calibre/ebooks/fb2/fb2ml.py b/src/calibre/ebooks/fb2/fb2ml.py
index 8a771d8810..4e05ddb127 100644
--- a/src/calibre/ebooks/fb2/fb2ml.py
+++ b/src/calibre/ebooks/fb2/fb2ml.py
@@ -433,7 +433,7 @@ class FB2MLizer:
             ems = round((float(style.marginTop) / style.fontSize) - 1)
             if ems < 0:
                 ems = 0
-        except:
+        except Exception:
             ems = 0
 
         # Convert TOC entries to s and add <section>s
diff --git a/src/calibre/ebooks/html_entities.py b/src/calibre/ebooks/html_entities.py
index 397537923a..ec2a4f93f4 100644
--- a/src/calibre/ebooks/html_entities.py
+++ b/src/calibre/ebooks/html_entities.py
@@ -2153,7 +2153,7 @@ def entity_to_unicode_in_python(match, exceptions=(), encoding='cp1252', result_
                 num = int(ent[2:], 16)
             else:
                 num = int(ent[1:])
-        except:
+        except Exception:
             return '&'+ent+';'
         if encoding is None or num > 255:
             return check(my_unichr(num))
diff --git a/src/calibre/ebooks/lrf/html/convert_from.py b/src/calibre/ebooks/lrf/html/convert_from.py
index 228341bdba..4c3ef1e51f 100644
--- a/src/calibre/ebooks/lrf/html/convert_from.py
+++ b/src/calibre/ebooks/lrf/html/convert_from.py
@@ -298,7 +298,7 @@ class HTMLConverter:
                     self.add_file(path)
                 except KeyboardInterrupt:
                     raise
-                except:
+                except Exception:
                     if self.link_level == 0:  # Die on errors in the first level
                         raise
                     for link in self.links:
@@ -370,7 +370,7 @@ class HTMLConverter:
                 with open(os.path.join(tdir, 'html2lrf-verbose.html'), 'wb') as f:
                     f.write(str(soup).encode('utf-8'))
                     self.log.info(_('Written preprocessed HTML to ')+f.name)
-            except:
+            except Exception:
                 pass
 
         return soup
@@ -1521,7 +1521,7 @@ class HTMLConverter:
                         try:
                             width = int(tag['width'])
                             height = int(tag['height'])
-                        except:
+                        except Exception:
                             pass
                         dropcaps = tag.get('class') in ('libprs500_dropcaps', ['libprs500_dropcaps'])
                         self.process_image(path, tag_css, width, height,
@@ -1579,7 +1579,7 @@ class HTMLConverter:
                     self.list_counter = 1
                     try:
                         self.list_counter = int(tag['start'])
-                    except:
+                    except Exception:
                         pass
                 prev_bs = self.current_block.blockStyle
                 self.end_current_block()
@@ -1949,7 +1949,7 @@ def try_opf(path, options, logger):
                     try:
                         PILImage.open(cover)
                         options.cover = cover
-                    except:
+                    except Exception:
                         pass
             if not getattr(options, 'cover', None) and orig_cover is not None:
                 options.cover = orig_cover
diff --git a/src/calibre/ebooks/lrf/html/table.py b/src/calibre/ebooks/lrf/html/table.py
index 617196b474..b827ba2972 100644
--- a/src/calibre/ebooks/lrf/html/table.py
+++ b/src/calibre/ebooks/lrf/html/table.py
@@ -89,7 +89,7 @@ class Cell:
         try:
             self.colspan = int(tag['colspan']) if tag.has_attr('colspan') else 1
             self.rowspan = int(tag['rowspan']) if tag.has_attr('rowspan') else 1
-        except:
+        except Exception:
             pass
 
         pp = conv.current_page
diff --git a/src/calibre/ebooks/lrf/input.py b/src/calibre/ebooks/lrf/input.py
index 754838a126..42feaf03c8 100644
--- a/src/calibre/ebooks/lrf/input.py
+++ b/src/calibre/ebooks/lrf/input.py
@@ -321,7 +321,7 @@ class Styles(etree.XSLTExtension):
     def px_to_pt(self, px):
         try:
             return px * 72/166
-        except:
+        except Exception:
             return None
 
     def color(self, val):
@@ -333,7 +333,7 @@ class Styles(etree.XSLTExtension):
             if a == 0:
                 return f'rgb({r},{g},{b})'
             return f'rgba({r},{g},{b},{1.0 - a / 255.0:f})'
-        except:
+        except Exception:
             return None
 
     def get_block_styles(self, node):
@@ -364,7 +364,7 @@ class Styles(etree.XSLTExtension):
     def to_num(self, val, factor=1.):
         try:
             return float(val)*factor
-        except:
+        except Exception:
             return None
 
     def get_text_styles(self, node):
diff --git a/src/calibre/ebooks/lrf/meta.py b/src/calibre/ebooks/lrf/meta.py
index 435c0a7a54..76dd552e5b 100644
--- a/src/calibre/ebooks/lrf/meta.py
+++ b/src/calibre/ebooks/lrf/meta.py
@@ -277,13 +277,13 @@ def get_metadata(stream):
         mi.title_sort = lrf.title_reading.strip()
         if not mi.title_sort:
             mi.title_sort = None
-    except:
+    except Exception:
         pass
     try:
         mi.author_sort = lrf.author_reading.strip()
         if not mi.author_sort:
             mi.author_sort = None
-    except:
+    except Exception:
         pass
     if not mi.title or 'unknown' in mi.title.lower():
         mi.title = None
@@ -733,7 +733,7 @@ def main(args=sys.argv):
     if options.get_cover:
         try:
             ext, data = lrf.get_cover()
-        except:  # Fails on books created by LRFCreator 1.0
+        except Exception:  # Fails on books created by LRFCreator 1.0
             ext, data = None, None
         if data:
             cover = os.path.splitext(os.path.basename(args[1]))[0]+'_cover.'+ext
diff --git a/src/calibre/ebooks/lrf/objects.py b/src/calibre/ebooks/lrf/objects.py
index dc2994aec8..2c83493b9b 100644
--- a/src/calibre/ebooks/lrf/objects.py
+++ b/src/calibre/ebooks/lrf/objects.py
@@ -827,7 +827,7 @@ class Text(LRFStream):
                         return pos-1
                     return find_first_tag(pos+1)
 
-                except:
+                except Exception:
                     return find_first_tag(pos+1)
 
             start_pos = stream.tell()
diff --git a/src/calibre/ebooks/lrf/pylrs/pylrs.py b/src/calibre/ebooks/lrf/pylrs/pylrs.py
index 4de0ac55b6..d166d9b366 100644
--- a/src/calibre/ebooks/lrf/pylrs/pylrs.py
+++ b/src/calibre/ebooks/lrf/pylrs/pylrs.py
@@ -2414,11 +2414,11 @@ class Font(LrsContainer):
         try:
             _checkExists(fontfilename)
             self.truefile = fontfilename
-        except:
+        except Exception:
             try:
                 _checkExists(file)
                 self.truefile = file
-            except:
+            except Exception:
                 raise LrsError(f"neither '{fontfilename}' nor '{file}' exists")
 
         self.file = file
diff --git a/src/calibre/ebooks/metadata/__init__.py b/src/calibre/ebooks/metadata/__init__.py
index 1da348443f..ef6b3134f6 100644
--- a/src/calibre/ebooks/metadata/__init__.py
+++ b/src/calibre/ebooks/metadata/__init__.py
@@ -170,7 +170,7 @@ def get_title_sort_pat(lang=None):
         ans = f'^({ans})'
         try:
             ans = re.compile(ans, re.IGNORECASE)
-        except:
+        except Exception:
             ans = re.compile(r'^(A|The|An)\s+', re.IGNORECASE)
     else:
         ans = re.compile(r'^$')  # matches only the empty string
@@ -279,7 +279,7 @@ class Resource:
         self.fragment = ''
         try:
             self.mime_type = guess_type(href_or_path)[0]
-        except:
+        except Exception:
             self.mime_type = None
         if self.mime_type is None:
             self.mime_type = 'application/octet-stream'
diff --git a/src/calibre/ebooks/metadata/archive.py b/src/calibre/ebooks/metadata/archive.py
index c86f1c5dcb..7da45b5ab9 100644
--- a/src/calibre/ebooks/metadata/archive.py
+++ b/src/calibre/ebooks/metadata/archive.py
@@ -23,7 +23,7 @@ def archive_type(stream):
     from calibre.utils.zipfile import stringFileHeader
     try:
         pos = stream.tell()
-    except:
+    except Exception:
         pos = 0
     id_ = stream.read(4)
     ans = None
diff --git a/src/calibre/ebooks/metadata/book/base.py b/src/calibre/ebooks/metadata/book/base.py
index c957015e67..3da46333d6 100644
--- a/src/calibre/ebooks/metadata/book/base.py
+++ b/src/calibre/ebooks/metadata/book/base.py
@@ -123,7 +123,7 @@ class Metadata:
             null_val = NULL_VALUES.get(field, None)
             val = getattr(self, field, None)
             return not val or val == null_val
-        except:
+        except Exception:
             return True
 
     def set_null(self, field):
@@ -139,7 +139,7 @@ class Metadata:
         if field == 'language':
             try:
                 return _data.get('languages', [])[0]
-            except:
+            except Exception:
                 return NULL_VALUES['language']
         try:
             return object.__getattribute__(self, field)
@@ -160,7 +160,7 @@ class Metadata:
         if field.startswith('#') and field.endswith('_index'):
             try:
                 return self.get_extra(field[:-6])
-            except:
+            except Exception:
                 pass
         raise AttributeError(
                 'Metadata object has no attribute named: '+ repr(field))
@@ -251,7 +251,7 @@ class Metadata:
         if field in _data['user_metadata']:
             try:
                 return _data['user_metadata'][field]['#extra#']
-            except:
+            except Exception:
                 return default
         raise AttributeError(
                 'Metadata object has no attribute named: '+ repr(field))
@@ -498,7 +498,7 @@ class Metadata:
                     self.set(dest, [f.strip() for f in val.split('&') if f.strip()])
                 else:
                     self.set(dest, val)
-            except:
+            except Exception:
                 if DEBUG:
                     traceback.print_exc()
 
@@ -713,7 +713,7 @@ class Metadata:
                 try:
                     fmt = cmeta['display'].get('number_format', None)
                     res = fmt.format(res)
-                except:
+                except Exception:
                     pass
             return (name, str(res), orig_res, cmeta)
 
diff --git a/src/calibre/ebooks/metadata/book/formatter.py b/src/calibre/ebooks/metadata/book/formatter.py
index 7abb794987..0cfd3edd55 100644
--- a/src/calibre/ebooks/metadata/book/formatter.py
+++ b/src/calibre/ebooks/metadata/book/formatter.py
@@ -31,7 +31,7 @@ class SafeFormat(TemplateFormatter):
                     raise ValueError(_('Value: unknown field ') + orig_key)
         try:
             b = self.book.get_user_metadata(key, False)
-        except:
+        except Exception:
             b = None
         if b and b['datatype'] in {'int', 'float'} and self.book.get(key, None) is None:
             v = ''
diff --git a/src/calibre/ebooks/metadata/book/json_codec.py b/src/calibre/ebooks/metadata/book/json_codec.py
index 9495bac505..62ec86f974 100644
--- a/src/calibre/ebooks/metadata/book/json_codec.py
+++ b/src/calibre/ebooks/metadata/book/json_codec.py
@@ -180,7 +180,7 @@ class JsonCodec:
                 entry = self.raw_to_book(item, book_class, prefix)
                 if entry is not None:
                     booklist.append(entry)
-        except:
+        except Exception:
             print('exception during JSON decode_from_file')
             traceback.print_exc()
 
@@ -196,7 +196,7 @@ class JsonCodec:
                         key = 'identifiers'
                     setattr(book, key, meta)
             return book
-        except:
+        except Exception:
             print('exception during JSON decoding')
             traceback.print_exc()
 
diff --git a/src/calibre/ebooks/metadata/book/render.py b/src/calibre/ebooks/metadata/book/render.py
index 03c94aa655..7336016e50 100644
--- a/src/calibre/ebooks/metadata/book/render.py
+++ b/src/calibre/ebooks/metadata/book/render.py
@@ -29,7 +29,7 @@ default_sort = ('title', 'title_sort', 'authors', 'author_sort', 'series', 'rati
 def field_sort(mi, name):
     try:
         title = mi.metadata_for_field(name)['name']
-    except:
+    except Exception:
         title = 'zzz'
     return {x:(i, None) for i, x in enumerate(default_sort)}.get(name, (10000, sort_key(title)))
 
@@ -38,7 +38,7 @@ def displayable_field_keys(mi):
     for k in mi.all_field_keys():
         try:
             m = mi.metadata_for_field(k)
-        except:
+        except Exception:
             continue
         if (
                 m is not None and m.get('kind') == 'field' and m.get('datatype') is not None and
@@ -187,7 +187,7 @@ def mi_to_html(
     for field in (field for field, display in field_list if display):
         try:
             metadata = mi.metadata_for_field(field)
-        except:
+        except Exception:
             continue
         if not metadata:
             continue
@@ -485,7 +485,7 @@ def mi_to_html(
     def classname(field):
         try:
             dt = mi.metadata_for_field(field)['datatype']
-        except:
+        except Exception:
             dt = 'text'
         return f'datatype_{dt}'
 
diff --git a/src/calibre/ebooks/metadata/epub.py b/src/calibre/ebooks/metadata/epub.py
index ab640b5501..135c7ba4f3 100644
--- a/src/calibre/ebooks/metadata/epub.py
+++ b/src/calibre/ebooks/metadata/epub.py
@@ -97,7 +97,7 @@ class OCFReader(OCF):
             mimetype = self.read_bytes('mimetype').decode('utf-8').rstrip()
             if mimetype != OCF.MIMETYPE:
                 print('WARNING: Invalid mimetype declaration', mimetype)
-        except:
+        except Exception:
             print("WARNING: Epub doesn't contain a valid mimetype declaration")
 
         try:
diff --git a/src/calibre/ebooks/metadata/extz.py b/src/calibre/ebooks/metadata/extz.py
index ebaa9b58fc..7ba88ab6e2 100644
--- a/src/calibre/ebooks/metadata/extz.py
+++ b/src/calibre/ebooks/metadata/extz.py
@@ -70,11 +70,11 @@ def set_metadata(stream, mi):
         new_cdata = mi.cover_data[1]
         if not new_cdata:
             raise Exception('no cover')
-    except:
+    except Exception:
         try:
             with open(mi.cover, 'rb') as f:
                 new_cdata = f.read()
-        except:
+        except Exception:
             pass
     if new_cdata:
         cpath = opf.raster_cover
@@ -94,7 +94,7 @@ def set_metadata(stream, mi):
         if cpath is not None:
             replacements[cpath].close()
             os.remove(replacements[cpath].name)
-    except:
+    except Exception:
         pass
 
 
diff --git a/src/calibre/ebooks/metadata/fb2.py b/src/calibre/ebooks/metadata/fb2.py
index 0f9ea63e2e..e378ccb9a8 100644
--- a/src/calibre/ebooks/metadata/fb2.py
+++ b/src/calibre/ebooks/metadata/fb2.py
@@ -123,36 +123,36 @@ def get_metadata(stream):
 
     try:
         _parse_cover(root, mi, ctx)
-    except:
+    except Exception:
         pass
     try:
         _parse_comments(root, mi, ctx)
-    except:
+    except Exception:
         pass
     try:
         _parse_tags(root, mi, ctx)
-    except:
+    except Exception:
         pass
     try:
         _parse_series(root, mi, ctx)
-    except:
+    except Exception:
         pass
     try:
         _parse_isbn(root, mi, ctx)
-    except:
+    except Exception:
         pass
     try:
         _parse_publisher(root, mi, ctx)
-    except:
+    except Exception:
         pass
     try:
         _parse_pubdate(root, mi, ctx)
-    except:
+    except Exception:
         pass
 
     try:
         _parse_language(root, mi, ctx)
-    except:
+    except Exception:
         pass
 
     return mi
@@ -218,7 +218,7 @@ def _parse_cover(root, mi, ctx):
     if imgid:
         try:
             _parse_cover_data(root, imgid, mi, ctx)
-        except:
+        except Exception:
             pass
 
 
@@ -385,7 +385,7 @@ def _set_series(title_info, mi, ctx):
         seq.set('name', mi.series)
         try:
             seq.set('number', f'{mi.series_index:g}')
-        except:
+        except Exception:
             seq.set('number', '1')
 
 
diff --git a/src/calibre/ebooks/metadata/html.py b/src/calibre/ebooks/metadata/html.py
index ead1ebc35a..47d1c11e04 100644
--- a/src/calibre/ebooks/metadata/html.py
+++ b/src/calibre/ebooks/metadata/html.py
@@ -184,7 +184,7 @@ def get_metadata_(src, encoding=None):
     for field in ('pubdate', 'timestamp'):
         try:
             val = parse_date(get(field))
-        except:
+        except Exception:
             pass
         else:
             if not is_date_undefined(val):
@@ -199,7 +199,7 @@ def get_metadata_(src, encoding=None):
         if match is not None:
             try:
                 series_index = float(match.group(1))
-            except:
+            except Exception:
                 pass
             series = series.replace(match.group(), '').strip()
         mi.series = series
@@ -207,7 +207,7 @@ def get_metadata_(src, encoding=None):
             series_index = get('series_index')
             try:
                 series_index = float(series_index)
-            except:
+            except Exception:
                 pass
         if series_index is not None:
             mi.series_index = series_index
@@ -221,7 +221,7 @@ def get_metadata_(src, encoding=None):
                 mi.rating = 0
             if mi.rating > 10:
                 mi.rating = 0
-        except:
+        except Exception:
             pass
 
     # TAGS
diff --git a/src/calibre/ebooks/metadata/lrx.py b/src/calibre/ebooks/metadata/lrx.py
index 809dd122f5..b2c5827454 100644
--- a/src/calibre/ebooks/metadata/lrx.py
+++ b/src/calibre/ebooks/metadata/lrx.py
@@ -48,7 +48,7 @@ def get_metadata(f):
             offset += word_be(buf[:4])
             try:
                 buf = read(offset, 8)
-            except:
+            except Exception:
                 raise ValueError('Not a valid LRX file')
             if buf[4:] == b'bbeb':
                 break
diff --git a/src/calibre/ebooks/metadata/meta.py b/src/calibre/ebooks/metadata/meta.py
index 03f2a2d6f9..d9b03533e4 100644
--- a/src/calibre/ebooks/metadata/meta.py
+++ b/src/calibre/ebooks/metadata/meta.py
@@ -32,7 +32,7 @@ def path_to_ext(path):
 def metadata_from_formats(formats, force_read_metadata=False, pattern=None):
     try:
         return _metadata_from_formats(formats, force_read_metadata, pattern)
-    except:
+    except Exception:
         mi = metadata_from_filename(list(iter(formats))[0], pat=pattern)
         if not mi.authors:
             mi.authors = [_('Unknown')]
@@ -193,7 +193,7 @@ def metadata_from_filename(name, pat=None, fallback_pat=None):
             if pubdate:
                 from calibre.utils.date import parse_only_date
                 mi.pubdate = parse_only_date(pubdate)
-        except:
+        except Exception:
             pass
         try:
             comments = match.group('comments')
diff --git a/src/calibre/ebooks/metadata/mobi.py b/src/calibre/ebooks/metadata/mobi.py
index a8f447c7fa..9432930106 100644
--- a/src/calibre/ebooks/metadata/mobi.py
+++ b/src/calibre/ebooks/metadata/mobi.py
@@ -343,7 +343,7 @@ class MetadataUpdater:
             pas = prefs.get('prefer_author_sort', False)
             kindle_pdoc = prefs.get('personal_doc', None)
             share_not_sync = prefs.get('share_not_sync', False)
-        except:
+        except Exception:
             pas = False
             kindle_pdoc = None
             share_not_sync = False
@@ -452,7 +452,7 @@ class MetadataUpdater:
                 if not data:
                     with open(mi.cover, 'rb') as f:
                         data = f.read()
-            except:
+            except Exception:
                 pass
             else:
                 if is_image(self.cover_record):
@@ -496,7 +496,7 @@ def get_metadata(stream):
     log = Log()
     try:
         mi = MetaInformation(os.path.basename(stream.name), [_('Unknown')])
-    except:
+    except Exception:
         mi = MetaInformation(_('Unknown'), [_('Unknown')])
     mh = MetadataHeader(stream, log)
     if mh.title and mh.title != _('Unknown'):
diff --git a/src/calibre/ebooks/metadata/opf2.py b/src/calibre/ebooks/metadata/opf2.py
index 1fbe725b11..9f47019830 100644
--- a/src/calibre/ebooks/metadata/opf2.py
+++ b/src/calibre/ebooks/metadata/opf2.py
@@ -77,7 +77,7 @@ class Resource:  # {{{
         self.fragment = ''
         try:
             self.mime_type = guess_type(href_or_path)[0]
-        except:
+        except Exception:
             self.mime_type = None
         if self.mime_type is None:
             self.mime_type = 'application/octet-stream'
@@ -339,7 +339,7 @@ class Spine(ResourceCollection):  # {{{
         for path in paths:
             try:
                 s.append(Spine.Item(s.manifest.id_for_path, path, is_path=True))
-            except:
+            except Exception:
                 continue
         return s
 
@@ -402,7 +402,7 @@ class Guide(ResourceCollection):  # {{{
             try:
                 ref = Guide.Reference.from_opf_resource_item(ref, base_dir)
                 coll.append(ref)
-            except:
+            except Exception:
                 continue
         return coll
 
@@ -438,7 +438,7 @@ class MetadataField:
         if self.formatter is not None:
             try:
                 ans = self.formatter(ans)
-            except:
+            except Exception:
                 return None
         if hasattr(ans, 'strip'):
             ans = ans.strip()
@@ -534,7 +534,7 @@ def serialize_user_metadata(metadata_elem, all_user_metadata, tail='\n'+(' '*8))
             encode_is_multiple(fm)
             fm = object_to_unicode(fm)
             fm = json.dumps(fm, default=to_json, ensure_ascii=False)
-        except:
+        except Exception:
             prints('Failed to write user metadata:', name)
             import traceback
             traceback.print_exc()
@@ -687,7 +687,7 @@ class OPF:  # {{{
                 fm = json.loads(fm, object_hook=from_json)
                 decode_is_multiple(fm)
                 temp.set_user_metadata(name, fm)
-            except:
+            except Exception:
                 prints('Failed to read user metadata:', name)
                 import traceback
                 traceback.print_exc()
@@ -766,7 +766,7 @@ class OPF:  # {{{
                         not os.path.isfile(self.path_to_html_toc):
                     self.path_to_html_toc = None
                 self.toc.read_html_toc(toc)
-        except:
+        except Exception:
             pass
 
     def get_text(self, elem):
@@ -964,7 +964,7 @@ class OPF:  # {{{
             try:
                 val = parse_date(etree.tostring(match, encoding='unicode',
                     method='text', with_tail=False).strip())
-            except:
+            except Exception:
                 continue
             if ans is None or val < ans:
                 ans = val
@@ -977,7 +977,7 @@ class OPF:  # {{{
             try:
                 cval = parse_date(etree.tostring(match, encoding='unicode',
                     method='text', with_tail=False).strip())
-            except:
+            except Exception:
                 match.getparent().remove(match)
             else:
                 if not val:
diff --git a/src/calibre/ebooks/metadata/opf3.py b/src/calibre/ebooks/metadata/opf3.py
index 9855854890..8837368ff5 100644
--- a/src/calibre/ebooks/metadata/opf3.py
+++ b/src/calibre/ebooks/metadata/opf3.py
@@ -799,7 +799,7 @@ def read_series(root, prefixes, refines):
         try:
             series_index = float(si)
             break
-        except:
+        except Exception:
             pass
     for s in XPath('./opf:metadata/opf:meta[@name="calibre:series"]/@content')(root):
         s = normalize_whitespace(s)
diff --git a/src/calibre/ebooks/metadata/sources/amazon.py b/src/calibre/ebooks/metadata/sources/amazon.py
index d1e337cdae..de27f97440 100644
--- a/src/calibre/ebooks/metadata/sources/amazon.py
+++ b/src/calibre/ebooks/metadata/sources/amazon.py
@@ -410,7 +410,7 @@ class Worker(Thread):  # Get details {{{
     def run(self):
         try:
             self.get_details()
-        except:
+        except Exception:
             self.log.exception('get_details failed for url: %r' % self.url)
 
     def get_details(self):
@@ -439,13 +439,13 @@ class Worker(Thread):  # Get details {{{
 
         try:
             title = self.parse_title(root)
-        except:
+        except Exception:
             self.log.exception('Error parsing title for url: %r' % self.url)
             title = None
 
         try:
             authors = self.parse_authors(root)
-        except:
+        except Exception:
             self.log.exception('Error parsing authors for url: %r' % self.url)
             authors = []
 
@@ -463,12 +463,12 @@ class Worker(Thread):  # Get details {{{
 
         try:
             mi.rating = self.parse_rating(root)
-        except:
+        except Exception:
             self.log.exception('Error parsing ratings for url: %r' % self.url)
 
         try:
             mi.comments = self.parse_comments(root, raw)
-        except:
+        except Exception:
             self.log.exception('Error parsing comments for url: %r' % self.url)
 
         try:
@@ -477,17 +477,17 @@ class Worker(Thread):  # Get details {{{
                 mi.series, mi.series_index = series, series_index
             elif self.testing:
                 mi.series, mi.series_index = 'Dummy series for testing', 1
-        except:
+        except Exception:
             self.log.exception('Error parsing series for url: %r' % self.url)
 
         try:
             mi.tags = self.parse_tags(root)
-        except:
+        except Exception:
             self.log.exception('Error parsing tags for url: %r' % self.url)
 
         try:
             self.cover_url = self.parse_cover(root, raw)
-        except:
+        except Exception:
             self.log.exception('Error parsing cover for url: %r' % self.url)
         if self.cover_url_processor is not None and self.cover_url and self.cover_url.startswith('/'):
             self.cover_url = self.cover_url_processor(self.cover_url)
@@ -503,7 +503,7 @@ class Worker(Thread):  # Get details {{{
         elif non_hero:
             try:
                 self.parse_new_details(root, mi, non_hero[0])
-            except:
+            except Exception:
                 self.log.exception(
                     'Failed to parse new-style book details section')
         elif feature_and_detail_bullets:
@@ -518,19 +518,19 @@ class Worker(Thread):  # Get details {{{
                     isbn = self.parse_isbn(pd)
                     if isbn:
                         self.isbn = mi.isbn = isbn
-                except:
+                except Exception:
                     self.log.exception(
                         'Error parsing ISBN for url: %r' % self.url)
 
                 try:
                     mi.publisher = self.parse_publisher(pd)
-                except:
+                except Exception:
                     self.log.exception(
                         'Error parsing publisher for url: %r' % self.url)
 
                 try:
                     mi.pubdate = self.parse_pubdate(pd)
-                except:
+                except Exception:
                     self.log.exception(
                         'Error parsing publish date for url: %r' % self.url)
 
@@ -538,7 +538,7 @@ class Worker(Thread):  # Get details {{{
                     lang = self.parse_language(pd)
                     if lang:
                         mi.language = lang
-                except:
+                except Exception:
                     self.log.exception(
                         'Error parsing language for url: %r' % self.url)
 
@@ -1025,7 +1025,7 @@ class Worker(Thread):  # Get details {{{
                 from calibre.utils.date import parse_only_date
                 date = self.delocalize_datestr(date)
                 mi.pubdate = parse_only_date(date, assume_utc=True)
-            except:
+            except Exception:
                 self.log.exception('Failed to parse pubdate: %s' % val)
         elif name in {'ISBN', 'ISBN-10', 'ISBN-13'}:
             ans = check_isbn(val)
@@ -1762,7 +1762,7 @@ class Amazon(Source):
             cdata = br.open_novisit(
                 cached_url, timeout=timeout).read()
             result_queue.put((self, cdata))
-        except:
+        except Exception:
             log.exception('Failed to download cover from:', cached_url)
     # }}}
 
diff --git a/src/calibre/ebooks/metadata/sources/covers.py b/src/calibre/ebooks/metadata/sources/covers.py
index 270e09738b..bd3572a540 100644
--- a/src/calibre/ebooks/metadata/sources/covers.py
+++ b/src/calibre/ebooks/metadata/sources/covers.py
@@ -46,7 +46,7 @@ class Worker(Thread):
                     self.plugin.download_cover(self.log, self.rq, self.abort,
                         title=self.title, authors=self.authors,
                         identifiers=self.identifiers, timeout=self.timeout)
-            except:
+            except Exception:
                 self.log.exception('Failed to download cover from',
                         self.plugin.name)
         self.time_spent = time.time() - start_time
diff --git a/src/calibre/ebooks/metadata/sources/edelweiss.py b/src/calibre/ebooks/metadata/sources/edelweiss.py
index 55c1d3baf5..1f7531333b 100644
--- a/src/calibre/ebooks/metadata/sources/edelweiss.py
+++ b/src/calibre/ebooks/metadata/sources/edelweiss.py
@@ -54,7 +54,7 @@ class Worker(Thread):  # {{{
         'sku={0}&idPrefix=content_1_{0}&mode=0'.format(self.sku))
         try:
             raw = self.br.open_novisit(url, timeout=self.timeout).read()
-        except:
+        except Exception:
             self.log.exception('Failed to load comments page: %r'%url)
             return
 
@@ -63,7 +63,7 @@ class Worker(Thread):  # {{{
             mi.source_relevance = self.relevance
             self.plugin.clean_downloaded_metadata(mi)
             self.result_queue.put(mi)
-        except:
+        except Exception:
             self.log.exception('Failed to parse details for sku: %s'%self.sku)
 
     def parse(self, raw):
@@ -375,7 +375,7 @@ class Edelweiss(Source):
         try:
             cdata = br.open_novisit(cached_url, timeout=timeout).read()
             result_queue.put((self, cdata))
-        except:
+        except Exception:
             log.exception('Failed to download cover from:', cached_url)
     # }}}
 
diff --git a/src/calibre/ebooks/metadata/sources/google.py b/src/calibre/ebooks/metadata/sources/google.py
index 7dc6c3fc6c..8777babc88 100644
--- a/src/calibre/ebooks/metadata/sources/google.py
+++ b/src/calibre/ebooks/metadata/sources/google.py
@@ -101,7 +101,7 @@ def to_metadata(browser, log, entry_, timeout, running_a_test=False):  # {{{
                 ans = ans[0].text
                 if ans and ans.strip():
                     return ans.strip()
-        except:
+        except Exception:
             log.exception('Programming error:')
         return None
 
@@ -170,7 +170,7 @@ def to_metadata(browser, log, entry_, timeout, running_a_test=False):  # {{{
             for tag in atags:
                 if tag not in tags:
                     tags.append(tag)
-    except:
+    except Exception:
         log.exception('Failed to parse tags:')
         tags = []
     if tags:
@@ -183,7 +183,7 @@ def to_metadata(browser, log, entry_, timeout, running_a_test=False):  # {{{
         try:
             default = utcnow().replace(day=15)
             mi.pubdate = parse_date(pubdate, assume_utc=True, default=default)
-        except:
+        except Exception:
             log.error('Failed to parse pubdate %r' % pubdate)
 
     # Cover
@@ -469,7 +469,7 @@ class GoogleBooks(Source):
                     ans = self.postprocess_downloaded_google_metadata(ans, relevance)
                     result_queue.put(ans)
                     found = True
-            except:
+            except Exception:
                 log.exception('Failed to get metadata for google books id:', gid)
             if abort.is_set():
                 break
diff --git a/src/calibre/ebooks/metadata/sources/identify.py b/src/calibre/ebooks/metadata/sources/identify.py
index 584922e47d..407fe83f57 100644
--- a/src/calibre/ebooks/metadata/sources/identify.py
+++ b/src/calibre/ebooks/metadata/sources/identify.py
@@ -45,7 +45,7 @@ class Worker(Thread):
         start = time.time()
         try:
             self.plugin.identify(self.log, self.rq, self.abort, **self.kwargs)
-        except:
+        except Exception:
             self.log.exception('Plugin', self.plugin.name, 'failed')
         self.plugin.dl_time_spent = time.time() - start
 
diff --git a/src/calibre/ebooks/metadata/sources/worker.py b/src/calibre/ebooks/metadata/sources/worker.py
index 66d5122ad8..ddf1a591f7 100644
--- a/src/calibre/ebooks/metadata/sources/worker.py
+++ b/src/calibre/ebooks/metadata/sources/worker.py
@@ -81,7 +81,7 @@ def main(do_identify, covers, metadata, ensure_fields, tdir):
             try:
                 results = identify(log, Event(), title=title, authors=authors,
                     identifiers=identifiers)
-            except:
+            except Exception:
                 pass
             if results:
                 all_failed = False
diff --git a/src/calibre/ebooks/metadata/toc.py b/src/calibre/ebooks/metadata/toc.py
index 0b164b154b..d49d3ff710 100644
--- a/src/calibre/ebooks/metadata/toc.py
+++ b/src/calibre/ebooks/metadata/toc.py
@@ -138,7 +138,7 @@ class TOC(list):
         if toc is None:
             try:
                 toc = opfreader.soup.find('guide').find('reference', attrs={'type':'toc'})['href']
-            except:
+            except Exception:
                 for item in opfreader.manifest:
                     if 'toc' in item.href().lower():
                         toc = item.href()
@@ -157,7 +157,7 @@ class TOC(list):
                         toc = os.path.join(os.path.dirname(toc), bn)
 
                     self.read_html_toc(toc)
-                except:
+                except Exception:
                     print('WARNING: Could not read Table of Contents. Continuing anyway.')
             else:
                 path = opfreader.manifest.item(toc.lower())
@@ -198,7 +198,7 @@ class TOC(list):
         def process_navpoint(np, dest):
             try:
                 play_order = int(get_attr(np, 1))
-            except:
+            except Exception:
                 play_order = 1
             href = fragment = text = None
             nd = dest
diff --git a/src/calibre/ebooks/metadata/topaz.py b/src/calibre/ebooks/metadata/topaz.py
index 374da028e0..4d428e4a43 100644
--- a/src/calibre/ebooks/metadata/topaz.py
+++ b/src/calibre/ebooks/metadata/topaz.py
@@ -341,7 +341,7 @@ class MetadataUpdater:
             from calibre.ebooks.conversion.config import load_defaults
             prefs = load_defaults('mobi_output')
             pas = prefs.get('prefer_author_sort', False)
-        except:
+        except Exception:
             pas = False
 
         if mi.author_sort and pas:
diff --git a/src/calibre/ebooks/metadata/xisbn.py b/src/calibre/ebooks/metadata/xisbn.py
index 732efdc47c..c77315c30d 100644
--- a/src/calibre/ebooks/metadata/xisbn.py
+++ b/src/calibre/ebooks/metadata/xisbn.py
@@ -60,7 +60,7 @@ class xISBN:
             if isbn not in self._map:
                 try:
                     data = self.fetch_data(isbn)
-                except:
+                except Exception:
                     import traceback
                     traceback.print_exc()
                     data = []
@@ -92,7 +92,7 @@ class xISBN:
                 year = int(x['year'])
                 if year < min_year:
                     min_year = year
-            except:
+            except Exception:
                 continue
         if min_year == 100000:
             min_year = None
diff --git a/src/calibre/ebooks/metadata/xmp.py b/src/calibre/ebooks/metadata/xmp.py
index c52a31d03a..fab264cf25 100644
--- a/src/calibre/ebooks/metadata/xmp.py
+++ b/src/calibre/ebooks/metadata/xmp.py
@@ -192,7 +192,7 @@ def read_user_metadata(mi, root):
                             decode_is_multiple(fm)
                             mi.set_user_metadata(name, fm)
                             fields.add(name)
-                        except:
+                        except Exception:
                             prints('Failed to read user metadata:', name)
                             import traceback
                             traceback.print_exc()
@@ -263,7 +263,7 @@ def metadata_from_xmp_packet(raw_bytes):
         mi.publisher = publishers[0]
     try:
         pubdate = parse_date(first_sequence('//dc:date', root) or first_simple('//xmp:CreateDate', root), assume_utc=False)
-    except:
+    except Exception:
         pass
     else:
         mi.pubdate = pubdate
@@ -458,7 +458,7 @@ def create_user_metadata(calibre, all_user_metadata):
             encode_is_multiple(fm)
             fm = object_to_unicode(fm)
             fm = json.dumps(fm, default=to_json, ensure_ascii=False)
-        except:
+        except Exception:
             prints('Failed to write user metadata:', name)
             import traceback
             traceback.print_exc()
diff --git a/src/calibre/ebooks/metadata/zip.py b/src/calibre/ebooks/metadata/zip.py
index ec6f575cb1..2883144f17 100644
--- a/src/calibre/ebooks/metadata/zip.py
+++ b/src/calibre/ebooks/metadata/zip.py
@@ -35,7 +35,7 @@ def get_metadata(stream):
                                 nmi = zip_opf_metadata(path, zf)
                                 nmi.timestamp = None
                                 return nmi
-                            except:
+                            except Exception:
                                 pass
                         mi.timestamp = None
                         return mi
diff --git a/src/calibre/ebooks/mobi/debug/main.py b/src/calibre/ebooks/mobi/debug/main.py
index b2edacd7d6..15ee2bb12a 100644
--- a/src/calibre/ebooks/mobi/debug/main.py
+++ b/src/calibre/ebooks/mobi/debug/main.py
@@ -22,7 +22,7 @@ def inspect_mobi(path_or_stream, ddir=None):  # {{{
         ddir = 'decompiled_' + os.path.splitext(os.path.basename(stream.name))[0]
     try:
         shutil.rmtree(ddir)
-    except:
+    except Exception:
         pass
     os.makedirs(ddir)
     if f.kf8_type is None:
diff --git a/src/calibre/ebooks/mobi/debug/mobi6.py b/src/calibre/ebooks/mobi/debug/mobi6.py
index 7ea630cf18..21acbcda29 100644
--- a/src/calibre/ebooks/mobi/debug/mobi6.py
+++ b/src/calibre/ebooks/mobi/debug/mobi6.py
@@ -451,7 +451,7 @@ class CNCX:  # {{{
                     try:
                         self.records[pos+record_offset] = raw[
                             pos+consumed:pos+consumed+length].decode(codec)
-                    except:
+                    except Exception:
                         byts = raw[pos:]
                         r = format_bytes(byts)
                         print(f'CNCX entry at offset {pos + record_offset} has unknown format {r}')
@@ -612,7 +612,7 @@ class TBSIndexing:  # {{{
                 try:
                     byts, a = self.interpret_periodical(tbs_type, byts,
                         dat['geom'][0])
-                except:
+                except Exception:
                     import traceback
                     traceback.print_exc()
                     a = []
@@ -755,7 +755,7 @@ class MOBIFile:  # {{{
                     b'AUDI', b'VIDE', b'FONT', b'CRES', b'CONT', b'CMET'}:
                 try:
                     fmt = what(None, r.raw)
-                except:
+                except Exception:
                     pass
             if fmt is not None:
                 self.image_records.append(ImageRecord(image_index, r, fmt))
diff --git a/src/calibre/ebooks/mobi/debug/mobi8.py b/src/calibre/ebooks/mobi/debug/mobi8.py
index 0fa06c5bdd..2f413c3e77 100644
--- a/src/calibre/ebooks/mobi/debug/mobi8.py
+++ b/src/calibre/ebooks/mobi/debug/mobi8.py
@@ -277,7 +277,7 @@ class MOBIFile:
             while tbs_bytes:
                 try:
                     val, extra, consumed = decode_tbs(tbs_bytes, flag_size=flag_sz)
-                except:
+                except Exception:
                     break
                 flag_sz = 4
                 tbs_bytes = tbs_bytes[consumed:]
@@ -291,7 +291,7 @@ class MOBIFile:
                     tbs_type=tbs_type)
             try:
                 calculated_bytes = sequences_to_bytes(calculated_sequences)
-            except:
+            except Exception:
                 calculated_bytes = b'failed to calculate tbs bytes'
             if calculated_bytes != otbs:
                 print(f'WARNING: TBS mismatch for record {i}')
diff --git a/src/calibre/ebooks/mobi/mobiml.py b/src/calibre/ebooks/mobi/mobiml.py
index 0e2376c147..066d2125b9 100644
--- a/src/calibre/ebooks/mobi/mobiml.py
+++ b/src/calibre/ebooks/mobi/mobiml.py
@@ -252,7 +252,7 @@ class MobiMLizer:
             pstate = bstate.istate = None
             try:
                 etree.SubElement(para, XHTML(tag), attrib=istate.attrib)
-            except:
+            except Exception:
                 print('Invalid subelement:', para, tag, istate.attrib)
                 raise
         elif tag in TABLE_TAGS:
@@ -263,7 +263,7 @@ class MobiMLizer:
                 if tag == 'li':
                     try:
                         last = bstate.body[-1][-1]
-                    except:
+                    except Exception:
                         break
                     last.insert(0, anchor)
                     anchor.tail = last.text
@@ -357,7 +357,7 @@ class MobiMLizer:
         if tag == 'ol' and 'start' in elem.attrib:
             try:
                 istate.list_num = int(elem.attrib['start'])-1
-            except:
+            except Exception:
                 pass
         istates.append(istate)
         left = 0
@@ -461,7 +461,7 @@ class MobiMLizer:
                         try:
                             pixs = round(float(value) /
                                 (72/self.profile.dpi))
-                        except:
+                        except Exception:
                             continue
                         result = str(pixs)
                     istate.attrib[prop] = result
@@ -469,7 +469,7 @@ class MobiMLizer:
                 href = self.current_spine_item.abshref(elem.attrib['src'])
                 try:
                     item = self.oeb.manifest.hrefs[urlnormalize(href)]
-                except:
+                except Exception:
                     self.oeb.logger.warn('Failed to find image:',
                             href)
                 else:
@@ -487,13 +487,13 @@ class MobiMLizer:
                             if 'width' not in istate.attrib:
                                 try:
                                     width = int(istate.attrib['height'])*ar
-                                except:
+                                except Exception:
                                     pass
                                 istate.attrib['width'] = str(int(width))
                             else:
                                 try:
                                     height = int(istate.attrib['width'])/ar
-                                except:
+                                except Exception:
                                     pass
                                 istate.attrib['height'] = str(int(height))
                         item.unload_data_from_memory()
@@ -593,7 +593,7 @@ class MobiMLizer:
                 try:
                     value = int(elem.attrib['value'])
                     istates[-2].list_num = value - 1
-                except:
+                except Exception:
                     pass
             self.mobimlize_content(tag, text, bstate, istates)
         for child in elem:
diff --git a/src/calibre/ebooks/mobi/reader/headers.py b/src/calibre/ebooks/mobi/reader/headers.py
index 2c61f30849..8d34653cc4 100644
--- a/src/calibre/ebooks/mobi/reader/headers.py
+++ b/src/calibre/ebooks/mobi/reader/headers.py
@@ -169,7 +169,7 @@ class EXTHHeader:  # {{{
                     cid = content[len('calibre:'):]
                     if cid:
                         self.mi.application_id = self.mi.uuid = cid
-            except:
+            except Exception:
                 pass
         elif idx == 113:  # ASIN or other id
             try:
@@ -259,9 +259,9 @@ class BookHeader:
                     if self.exth.mi.is_null('language'):
                         try:
                             self.exth.mi.language = mobi2iana(langid, sublangid)
-                        except:
+                        except Exception:
                             self.log.exception('Unknown language code')
-                except:
+                except Exception:
                     self.log.exception('Invalid EXTH header')
                     self.exth_flag = 0
 
diff --git a/src/calibre/ebooks/mobi/reader/index.py b/src/calibre/ebooks/mobi/reader/index.py
index aade17312f..70af01b5e0 100644
--- a/src/calibre/ebooks/mobi/reader/index.py
+++ b/src/calibre/ebooks/mobi/reader/index.py
@@ -100,7 +100,7 @@ class CNCX:  # {{{
                     try:
                         self.records[pos+record_offset] = raw[
                             pos+consumed:pos+consumed+length].decode(codec)
-                    except:
+                    except Exception:
                         byts = raw[pos:]
                         r = format_bytes(byts)
                         print(f'CNCX entry at offset {pos + record_offset} has unknown format {r}')
diff --git a/src/calibre/ebooks/mobi/reader/mobi6.py b/src/calibre/ebooks/mobi/reader/mobi6.py
index 0628c5c47b..00aa4a844b 100644
--- a/src/calibre/ebooks/mobi/reader/mobi6.py
+++ b/src/calibre/ebooks/mobi/reader/mobi6.py
@@ -129,7 +129,7 @@ class MobiReader:
         elif k8i is not None:  # Check for joint mobi 6 and kf 8 file
             try:
                 raw = self.sections[k8i-1][0]
-            except:
+            except Exception:
                 raw = None
             if raw == b'BOUNDARY':
                 try:
@@ -149,14 +149,14 @@ class MobiReader:
 
                     self.kf8_type = 'joint'
                     self.kf8_boundary = k8i-1
-                except:
+                except Exception:
                     self.book_header = bh
 
     def check_for_drm(self):
         if self.book_header.encryption_type != 0:
             try:
                 name = self.book_header.exth.mi.title
-            except:
+            except Exception:
                 name = self.name
             if not name:
                 name = self.name
@@ -475,14 +475,14 @@ class MobiReader:
                         try:
                             ewidth_val = unit_convert(ewidth, 12, 500, 166)
                             self.text_indents[tag] = ewidth_val
-                        except:
+                        except Exception:
                             pass
                         if width.startswith('-'):
                             styles.append(f'margin-left: {self.ensure_unit(width[1:])}')
                             try:
                                 ewidth_val = unit_convert(ewidth[1:], 12, 500, 166)
                                 self.left_margins[tag] = ewidth_val
-                            except:
+                            except Exception:
                                 pass
 
             if 'align' in attrib:
@@ -534,7 +534,7 @@ class MobiReader:
                                 nval = float(val[:-2])
                                 nval *= 16 * (168.451/72)  # Assume this was set using the Kindle profile
                                 attrib[attr] = f'{int(nval)}px'
-                            except:
+                            except Exception:
                                 del attrib[attr]
                         elif val.lower().endswith('%'):
                             del attrib[attr]
@@ -636,11 +636,11 @@ class MobiReader:
             ti = self.text_indents.get(tag, ti)
             try:
                 lm = float(lm)
-            except:
+            except Exception:
                 lm = 0.0
             try:
                 ti = float(ti)
-            except:
+            except Exception:
                 ti = 0.0
             return lm + ti
 
@@ -718,7 +718,7 @@ class MobiReader:
                             try:
                                 text = ' '.join([t.strip() for t in
                                     x.xpath('descendant::text()')])
-                            except:
+                            except Exception:
                                 text = ''
                             text = replace_entities(text)
                             item = tocobj.add_item(toc.partition('#')[0], href[1:],
diff --git a/src/calibre/ebooks/mobi/reader/mobi8.py b/src/calibre/ebooks/mobi/reader/mobi8.py
index db0b943aae..648322134f 100644
--- a/src/calibre/ebooks/mobi/reader/mobi8.py
+++ b/src/calibre/ebooks/mobi/reader/mobi8.py
@@ -482,7 +482,7 @@ class Mobi8Reader:
                     if os.path.exists(href.replace('/', os.sep)):
                         try:
                             toc = self.read_inline_toc(href, frag)
-                        except:
+                        except Exception:
                             self.log.exception('Failed to read inline ToC')
 
         opf = OPFCreator(os.getcwd(), mi)
@@ -502,7 +502,7 @@ class Mobi8Reader:
         if self.for_tweak:
             try:
                 os.remove('debug-raw.html')
-            except:
+            except Exception:
                 pass
 
         opf.create_manifest_from_files_in([os.getcwd()], exclude=exclude)
diff --git a/src/calibre/ebooks/mobi/tweak.py b/src/calibre/ebooks/mobi/tweak.py
index ae9928aafc..0f15b52fbc 100644
--- a/src/calibre/ebooks/mobi/tweak.py
+++ b/src/calibre/ebooks/mobi/tweak.py
@@ -33,7 +33,7 @@ def do_explode(path, dest):
             opf = os.path.abspath(mr())
             try:
                 os.remove('debug-raw.html')
-            except:
+            except Exception:
                 pass
 
     return opf
diff --git a/src/calibre/ebooks/mobi/utils.py b/src/calibre/ebooks/mobi/utils.py
index e4a93ae9b3..09be029b3d 100644
--- a/src/calibre/ebooks/mobi/utils.py
+++ b/src/calibre/ebooks/mobi/utils.py
@@ -462,7 +462,7 @@ def read_font_record(data, extent=1040):
     try:
         usize, flags, dstart, xor_len, xor_start = struct.unpack_from(
                 b'>LLLLL', data, 4)
-    except:
+    except Exception:
         ans['err'] = 'Failed to read font record header fields'
         return ans
     font_data = data[dstart:]
diff --git a/src/calibre/ebooks/mobi/writer2/indexer.py b/src/calibre/ebooks/mobi/writer2/indexer.py
index 3c8eca2f29..408f030188 100644
--- a/src/calibre/ebooks/mobi/writer2/indexer.py
+++ b/src/calibre/ebooks/mobi/writer2/indexer.py
@@ -368,7 +368,7 @@ class TBS:  # {{{
 
                 try:
                     next_sec = sections[i+1]
-                except:
+                except Exception:
                     next_sec = None
 
                 extra = {}
@@ -635,7 +635,7 @@ class Indexer:  # {{{
             try:
                 offset = id_offsets[node.href]
                 label = self.cncx[node.title]
-            except:
+            except Exception:
                 self.log.warn(f'TOC item {node.title} [{node.href}] not found in document')
                 continue
 
@@ -651,7 +651,7 @@ class Indexer:  # {{{
         for i, index in enumerate(indices):
             try:
                 next_offset = indices[i+1].offset
-            except:
+            except Exception:
                 next_offset = self.serializer.body_end_offset
             index.length = next_offset - index.offset
 
@@ -662,7 +662,7 @@ class Indexer:  # {{{
         for i, index in enumerate(indices):
             try:
                 next_offset = indices[i+1].offset
-            except:
+            except Exception:
                 next_offset = self.serializer.body_end_offset
             index.length = next_offset - index.offset
 
@@ -700,7 +700,7 @@ class Indexer:  # {{{
                 offset = id_offsets[sec.href]
                 label = self.cncx[sec.title]
                 klass = self.cncx[sec.klass]
-            except:
+            except Exception:
                 continue
             if offset in seen_sec_offsets:
                 continue
@@ -714,7 +714,7 @@ class Indexer:  # {{{
                     offset = id_offsets[art.href]
                     label = self.cncx[art.title]
                     klass = self.cncx[art.klass]
-                except:
+                except Exception:
                     continue
                 if offset in seen_art_offsets:
                     continue
@@ -742,12 +742,12 @@ class Indexer:  # {{{
             sec, normalized_articles = x
             try:
                 sec.length = normalized_sections[s+1][0].offset - sec.offset
-            except:
+            except Exception:
                 sec.length = self.serializer.body_end_offset - sec.offset
             for i, art in enumerate(normalized_articles):
                 try:
                     art.length = normalized_articles[i+1].offset - art.offset
-                except:
+                except Exception:
                     art.length = sec.offset + sec.length - art.offset
 
         # Filter
@@ -783,14 +783,14 @@ class Indexer:  # {{{
             sec, articles = x
             try:
                 next_offset = normalized_sections[s+1][0].offset
-            except:
+            except Exception:
                 next_offset = self.serializer.body_end_offset
             sec.length = next_offset - sec.offset
 
             for a, art in enumerate(articles):
                 try:
                     next_offset = articles[a+1].offset
-                except:
+                except Exception:
                     next_offset = sec.next_offset
                 art.length = next_offset - art.offset
 
@@ -799,7 +799,7 @@ class Indexer:  # {{{
             sec, articles = x
             try:
                 next_sec = normalized_sections[s+1][0]
-            except:
+            except Exception:
                 if (sec.length == 0 or sec.next_offset !=
                         self.serializer.body_end_offset):
                     raise ValueError('Invalid section layout')
@@ -809,7 +809,7 @@ class Indexer:  # {{{
             for a, art in enumerate(articles):
                 try:
                     next_art = articles[a+1]
-                except:
+                except Exception:
                     if (art.length == 0 or art.next_offset !=
                             sec.next_offset):
                         raise ValueError('Invalid article layout')
diff --git a/src/calibre/ebooks/mobi/writer2/main.py b/src/calibre/ebooks/mobi/writer2/main.py
index 9c8e9ea6d9..b2b8126ff5 100644
--- a/src/calibre/ebooks/mobi/writer2/main.py
+++ b/src/calibre/ebooks/mobi/writer2/main.py
@@ -100,7 +100,7 @@ class MobiWriter:
                     len(self.records[self.last_text_record_idx]),
                     self.masthead_offset, self.is_periodical,
                     self.opts, self.oeb)
-        except:
+        except Exception:
             self.log.exception('Failed to generate MOBI index:')
         else:
             self.primary_index_record_idx = len(self.records)
diff --git a/src/calibre/ebooks/mobi/writer2/resources.py b/src/calibre/ebooks/mobi/writer2/resources.py
index afe5befe69..dce964ddb3 100644
--- a/src/calibre/ebooks/mobi/writer2/resources.py
+++ b/src/calibre/ebooks/mobi/writer2/resources.py
@@ -132,7 +132,7 @@ class Resources:
                     self.used_image_indices.add(self.cover_offset)
                     try:
                         tdata = rescale_image(data, dimen=MAX_THUMB_DIMEN, maxsizeb=MAX_THUMB_SIZE)
-                    except:
+                    except Exception:
                         self.log.warn('Failed to generate thumbnail')
                     else:
                         self.image_indices.add(len(self.records))
@@ -168,7 +168,7 @@ class Resources:
                 continue
             try:
                 data = self.process_image(item.data)
-            except:
+            except Exception:
                 self.log.warn(f'Bad image file {item.href!r}')
             else:
                 self.records.append(data)
diff --git a/src/calibre/ebooks/mobi/writer2/serializer.py b/src/calibre/ebooks/mobi/writer2/serializer.py
index 7d48491592..a7137a2730 100644
--- a/src/calibre/ebooks/mobi/writer2/serializer.py
+++ b/src/calibre/ebooks/mobi/writer2/serializer.py
@@ -103,7 +103,7 @@ class Serializer:
         for i, item in enumerate(items):
             try:
                 prev_item = items[i-1]
-            except:
+            except Exception:
                 prev_item = None
             if in_art and item.is_article_start is True:
                 prev_item.is_article_end = True
diff --git a/src/calibre/ebooks/mobi/writer8/exth.py b/src/calibre/ebooks/mobi/writer8/exth.py
index 5421f1fac1..70f33f60dc 100644
--- a/src/calibre/ebooks/mobi/writer8/exth.py
+++ b/src/calibre/ebooks/mobi/writer8/exth.py
@@ -70,7 +70,7 @@ def build_exth(metadata, prefer_author_sort=False, is_periodical=False,
         elif term == 'rights':
             try:
                 rights = utf8_text(str(metadata.rights[0]))
-            except:
+            except Exception:
                 rights = b'Unknown'
             exth.write(pack(b'>II', EXTH_CODES['rights'], len(rights) + 8))
             exth.write(rights)
diff --git a/src/calibre/ebooks/odt/input.py b/src/calibre/ebooks/odt/input.py
index d2da2e104d..b4323e9f5e 100644
--- a/src/calibre/ebooks/odt/input.py
+++ b/src/calibre/ebooks/odt/input.py
@@ -259,7 +259,7 @@ class Extract(ODF2XHTML):
         self.search_page_img(mi, log)
         try:
             self.filter_cover(mi, log)
-        except:
+        except Exception:
             pass
         # parse the modified tree and generate xhtml
         self._walknode(self.document.topnode)
@@ -290,7 +290,7 @@ class Extract(ODF2XHTML):
             html = html.replace('<title>',f'{mi.title}')
             try:
                 html = self.fix_markup(html, log)
-            except:
+            except Exception:
                 log.exception('Failed to filter CSS, conversion may be slow')
             with open('index.xhtml', 'wb') as f:
                 f.write(as_bytes(html))
diff --git a/src/calibre/ebooks/oeb/base.py b/src/calibre/ebooks/oeb/base.py
index 1192c870d0..a85c77fad4 100644
--- a/src/calibre/ebooks/oeb/base.py
+++ b/src/calibre/ebooks/oeb/base.py
@@ -802,7 +802,7 @@ class Metadata:
                 elem = element(parent, self.term, attrib=attrib)
                 try:
                     elem.text = self.value
-                except:
+                except Exception:
                     elem.text = repr(self.value)
             else:
                 elem = element(parent, OPF('meta'), attrib=attrib)
@@ -1834,7 +1834,7 @@ class OEBBook:
         for path in self._temp_files:
             try:
                 os.remove(path)
-            except:
+            except Exception:
                 pass
 
     @classmethod
diff --git a/src/calibre/ebooks/oeb/iterator/book.py b/src/calibre/ebooks/oeb/iterator/book.py
index cede2cfc19..987a39b112 100644
--- a/src/calibre/ebooks/oeb/iterator/book.py
+++ b/src/calibre/ebooks/oeb/iterator/book.py
@@ -172,7 +172,7 @@ class EbookIterator(BookmarksMixin):
                     self.spine.append(Spiny(spath, mime_type=mt))
                     if is_comic:
                         self.spine[-1].is_single_page = True
-                except:
+                except Exception:
                     self.log.warn('Missing spine item:', repr(spath))
 
         cover = self.opf.cover
@@ -191,7 +191,7 @@ class EbookIterator(BookmarksMixin):
            self.opf.path_to_html_toc not in self.spine:
             try:
                 self.spine.append(Spiny(self.opf.path_to_html_toc))
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
 
@@ -238,5 +238,5 @@ class EbookIterator(BookmarksMixin):
         for x in self.delete_on_exit:
             try:
                 os.remove(x)
-            except:
+            except Exception:
                 pass
diff --git a/src/calibre/ebooks/oeb/parse_utils.py b/src/calibre/ebooks/oeb/parse_utils.py
index 55decb1d61..0185bc0be0 100644
--- a/src/calibre/ebooks/oeb/parse_utils.py
+++ b/src/calibre/ebooks/oeb/parse_utils.py
@@ -239,7 +239,7 @@ def parse_html(data, log=None, decoder=None, preprocessor=None,
                     del x.attrib[key]
                     key = key.lower()
                     x.attrib[key] = val
-            except:
+            except Exception:
                 pass
 
     if barename(data.tag) != 'html':
@@ -272,7 +272,7 @@ def parse_html(data, log=None, decoder=None, preprocessor=None,
 
         try:
             data = safe_xml_fromstring(data, recover=False)
-        except:
+        except Exception:
             data = data.replace(':=', '=').replace(':>', '>')
             data = data.replace('', '')
             try:
diff --git a/src/calibre/ebooks/oeb/polish/check/base.py b/src/calibre/ebooks/oeb/polish/check/base.py
index 21cf8f4ccc..9b04aeec5f 100644
--- a/src/calibre/ebooks/oeb/polish/check/base.py
+++ b/src/calibre/ebooks/oeb/polish/check/base.py
@@ -36,7 +36,7 @@ def worker(func, args):
     try:
         result = func(*args)
         tb = None
-    except:
+    except Exception:
         result = None
         import traceback
         tb = traceback.format_exc()
diff --git a/src/calibre/ebooks/oeb/polish/container.py b/src/calibre/ebooks/oeb/polish/container.py
index 8955d49f0f..baa08db63c 100644
--- a/src/calibre/ebooks/oeb/polish/container.py
+++ b/src/calibre/ebooks/oeb/polish/container.py
@@ -81,7 +81,7 @@ def clone_dir(src, dest):
         else:
             try:
                 hardlink_file(spath, dpath)
-            except:
+            except Exception:
                 shutil.copy2(spath, dpath)
 
 
@@ -1192,7 +1192,7 @@ class EpubContainer(Container):
                 try:
                     zf = ZipFile(stream)
                     zf.extractall(tdir)
-                except:
+                except Exception:
                     log.exception('EPUB appears to be invalid ZIP file, trying a'
                             ' more forgiving ZIP parser')
                     from calibre.utils.localunzip import extractall
diff --git a/src/calibre/ebooks/oeb/polish/cover.py b/src/calibre/ebooks/oeb/polish/cover.py
index 619a5316ad..379ac3ba11 100644
--- a/src/calibre/ebooks/oeb/polish/cover.py
+++ b/src/calibre/ebooks/oeb/polish/cover.py
@@ -378,7 +378,7 @@ def create_epub_cover(container, cover_path, existing_image, options=None):
                 else:
                     with open(cover_path, 'rb') as csrc:
                         width, height = identify(csrc)[1:]
-            except:
+            except Exception:
                 container.log.exception('Failed to get width and height of cover')
             ar = 'xMidYMid meet' if keep_aspect else 'none'
             templ = CoverManager.SVG_TEMPLATE.replace('__ar__', ar)
diff --git a/src/calibre/ebooks/oeb/polish/toc.py b/src/calibre/ebooks/oeb/polish/toc.py
index b315c65354..0a519a2283 100644
--- a/src/calibre/ebooks/oeb/polish/toc.py
+++ b/src/calibre/ebooks/oeb/polish/toc.py
@@ -411,7 +411,7 @@ def item_at_top(elem):
         try:
             if el.tag.endswith('}img') or (el.text and el.text.strip()):
                 return False
-        except:
+        except Exception:
             return False
         if not path.startswith(epath):
             # Only check tail of non-parent elements
diff --git a/src/calibre/ebooks/oeb/reader.py b/src/calibre/ebooks/oeb/reader.py
index dba0276c27..e3b7de23a7 100644
--- a/src/calibre/ebooks/oeb/reader.py
+++ b/src/calibre/ebooks/oeb/reader.py
@@ -197,7 +197,7 @@ class OEBReader:
                     item.data
                 except KeyboardInterrupt:
                     raise
-                except:
+                except Exception:
                     self.logger.exception(f'Failed to parse content in {item.href}')
                     bad.append(item)
                     self.oeb.manifest.remove(item)
@@ -217,7 +217,7 @@ class OEBReader:
                 if (item.media_type in cdoc or item.media_type[-4:] in ('/xml', '+xml')):
                     try:
                         data = item.data
-                    except:
+                    except Exception:
                         self.oeb.log.exception('Failed to read from manifest '
                                 f'entry with id: {item.id}, ignoring')
                         invalid.add(item)
@@ -236,7 +236,7 @@ class OEBReader:
                         try:
                             href = item.abshref(urlnormalize(href))
                             scheme = urlparse(href).scheme
-                        except:
+                        except Exception:
                             self.oeb.log.exception(
                                 f'Skipping invalid href: {href!r}')
                             continue
@@ -245,7 +245,7 @@ class OEBReader:
                 elif item.media_type in OEB_STYLES:
                     try:
                         urls = list(css_parser.getUrls(data))
-                    except:
+                    except Exception:
                         urls = []
                     for url in urls:
                         href, _ = urldefrag(url)
@@ -434,7 +434,7 @@ class OEBReader:
 
             try:
                 po = int(child.get('playOrder', self.oeb.toc.next_play_order()))
-            except:
+            except Exception:
                 po = self.oeb.toc.next_play_order()
 
             authorElement = xpath(child,
diff --git a/src/calibre/ebooks/oeb/stylizer.py b/src/calibre/ebooks/oeb/stylizer.py
index 7e872eeff5..c9b3e53fc1 100644
--- a/src/calibre/ebooks/oeb/stylizer.py
+++ b/src/calibre/ebooks/oeb/stylizer.py
@@ -381,7 +381,7 @@ class Stylizer:
                     val = elem.get(prop, '').strip()
                     try:
                         del elem.attrib[prop]
-                    except:
+                    except Exception:
                         pass
                     if val:
                         if num_pat.match(val) is not None:
@@ -580,7 +580,7 @@ class Style:
                         val = style.getProperty('background').propertyValue
                         try:
                             val = list(val)
-                        except:
+                        except Exception:
                             # val is CSSPrimitiveValue
                             val = [val]
                         for c in val:
@@ -590,7 +590,7 @@ class Style:
                             if validate_color(c):
                                 col = c
                                 break
-                    except:
+                    except Exception:
                         pass
             if col is None:
                 self._bgcolor = False
diff --git a/src/calibre/ebooks/oeb/transforms/cover.py b/src/calibre/ebooks/oeb/transforms/cover.py
index 39194b7e0b..a1cfa6746a 100644
--- a/src/calibre/ebooks/oeb/transforms/cover.py
+++ b/src/calibre/ebooks/oeb/transforms/cover.py
@@ -109,7 +109,7 @@ class CoverManager:
             m.add('cover', item.id)
 
             return item.href
-        except:
+        except Exception:
             self.log.exception('Failed to generate default cover')
         return None
 
diff --git a/src/calibre/ebooks/oeb/transforms/flatcss.py b/src/calibre/ebooks/oeb/transforms/flatcss.py
index ab3b81d281..31368fc3db 100644
--- a/src/calibre/ebooks/oeb/transforms/flatcss.py
+++ b/src/calibre/ebooks/oeb/transforms/flatcss.py
@@ -179,7 +179,7 @@ class CSSFlattener:
             try:
                 self.filter_css = {x.strip().lower() for x in
                     self.opts.filter_css.split(',')}
-            except:
+            except Exception:
                 self.oeb.log.warning('Failed to parse filter_css, ignoring')
             else:
                 from calibre.ebooks.oeb.normalize_css import normalize_filter_css
@@ -330,7 +330,7 @@ class CSSFlattener:
             self.baseline_node(body, stylizer, sizes, fsize)
         try:
             sbase = max(list(sizes.items()), key=operator.itemgetter(1))[0]
-        except:
+        except Exception:
             sbase = 12.0
         self.oeb.logger.info(
             f'Source base font size is {sbase:0.5f}pt')
@@ -354,7 +354,7 @@ class CSSFlattener:
                 else:
                     try:
                         value = round(value / slineh) * dlineh
-                    except:
+                    except Exception:
                         self.oeb.logger.warning(
                                 'Invalid length:', value)
                         value = 0.0
@@ -368,7 +368,7 @@ class CSSFlattener:
         cssdict = style.cssdict()
         try:
             font_size = style['font-size']
-        except:
+        except Exception:
             font_size = self.sbase if self.sbase is not None else \
                 self.context.source.fbase
         if tag == 'body' and isinstance(font_size, numbers.Number):
@@ -416,7 +416,7 @@ class CSSFlattener:
                         # Oh, the warcrimes
                         try:
                             esize = 3 + force_int(size)
-                        except:
+                        except Exception:
                             esize = 3
                         if esize < 1:
                             esize = 1
@@ -426,7 +426,7 @@ class CSSFlattener:
                     else:
                         try:
                             font_size = fnums[force_int(size)]
-                        except:
+                        except Exception:
                             font_size = fnums[3]
                     cssdict['font-size'] = f'{font_size:.1f}pt'
                 del node.attrib['size']
diff --git a/src/calibre/ebooks/oeb/transforms/jacket.py b/src/calibre/ebooks/oeb/transforms/jacket.py
index 73e3b244e8..78c25361a0 100644
--- a/src/calibre/ebooks/oeb/transforms/jacket.py
+++ b/src/calibre/ebooks/oeb/transforms/jacket.py
@@ -112,17 +112,17 @@ class Jacket(Base):
 
         try:
             comments = str(self.oeb.metadata.description[0])
-        except:
+        except Exception:
             comments = ''
 
         try:
             title = str(self.oeb.metadata.title[0])
-        except:
+        except Exception:
             title = _('Unknown')
 
         try:
             authors = list(map(str, self.oeb.metadata.creator))
-        except:
+        except Exception:
             authors = [_('Unknown')]
 
         root = render_jacket(mi, self.opts.output_profile,
@@ -167,7 +167,7 @@ def get_rating(rating, rchar, e_rchar):
     ans = ''
     try:
         num = float(rating)/2
-    except:
+    except Exception:
         return ans
     num = max(0, num)
     num = min(num, 5)
@@ -290,7 +290,7 @@ def render_jacket(mi, output_profile,
 
     try:
         title_str = alt_title if mi.is_null('title') else mi.title
-    except:
+    except Exception:
         title_str = _('Unknown')
     title_str = escape(title_str)
     title = f'{title_str}'
@@ -298,7 +298,7 @@ def render_jacket(mi, output_profile,
     series = Series(mi.series, mi.series_index)
     try:
         publisher = mi.publisher if not mi.is_null('publisher') else alt_publisher
-    except:
+    except Exception:
         publisher = ''
     publisher = escape(publisher)
 
@@ -324,7 +324,7 @@ def render_jacket(mi, output_profile,
         mi.authors = list(alt_authors or (_('Unknown'),))
     try:
         author = mi.format_authors()
-    except:
+    except Exception:
         author = ''
     mi.authors = orig
     author = escape(author)
diff --git a/src/calibre/ebooks/oeb/transforms/page_margin.py b/src/calibre/ebooks/oeb/transforms/page_margin.py
index 736bf82cb1..d41a191e8f 100644
--- a/src/calibre/ebooks/oeb/transforms/page_margin.py
+++ b/src/calibre/ebooks/oeb/transforms/page_margin.py
@@ -84,7 +84,7 @@ class RemoveFakeMargins:
             if style:
                 try:
                     ti = style['text-indent']
-                except:
+                except Exception:
                     pass
                 else:
                     if ((hasattr(ti, 'startswith') and ti.startswith('-')) or (isinstance(ti, numbers.Number) and ti < 0)):
diff --git a/src/calibre/ebooks/oeb/transforms/rasterize.py b/src/calibre/ebooks/oeb/transforms/rasterize.py
index 5843b40723..83c5e44054 100644
--- a/src/calibre/ebooks/oeb/transforms/rasterize.py
+++ b/src/calibre/ebooks/oeb/transforms/rasterize.py
@@ -114,7 +114,7 @@ class SVGRasterizer:
                     try:
                         h = float(image.get('height').replace('%', ''))/100.
                         image.set('height', str(h*sizes[1]))
-                    except:
+                    except Exception:
                         logger.exception('Failed to convert percentage height:',
                                 image.get('height'))
 
diff --git a/src/calibre/ebooks/oeb/transforms/split.py b/src/calibre/ebooks/oeb/transforms/split.py
index cae8982825..34263621cb 100644
--- a/src/calibre/ebooks/oeb/transforms/split.py
+++ b/src/calibre/ebooks/oeb/transforms/split.py
@@ -97,14 +97,14 @@ class Split:
                         self.page_break_selectors.add((rule.selectorText, True))
                         if self.remove_css_pagebreaks:
                             rule.style.removeProperty('page-break-before')
-                except:
+                except Exception:
                     pass
                 try:
                     if after and after not in {'avoid', 'auto', 'inherit'}:
                         self.page_break_selectors.add((rule.selectorText, False))
                         if self.remove_css_pagebreaks:
                             rule.style.removeProperty('page-break-after')
-                except:
+                except Exception:
                     pass
         page_breaks = set()
         select = Select(item.data)
@@ -138,10 +138,10 @@ class Split:
             id = x.get('id')
             try:
                 xp = XPath(f'//*[@id="{id}"]')
-            except:
+            except Exception:
                 try:
                     xp = XPath(f"//*[@id='{id}']")
-                except:
+                except Exception:
                     # The id has both a quote and an apostrophe or some other
                     # Just replace it since I doubt its going to work anywhere else
                     # either
@@ -410,7 +410,7 @@ class FlowSplitter:
             if elem is not None:
                 try:
                     XPath(elem.getroottree().getpath(elem))
-                except:
+                except Exception:
                     continue
                 return elem, True
 
diff --git a/src/calibre/ebooks/oeb/transforms/structure.py b/src/calibre/ebooks/oeb/transforms/structure.py
index 36dcac9ede..b9bcc60239 100644
--- a/src/calibre/ebooks/oeb/transforms/structure.py
+++ b/src/calibre/ebooks/oeb/transforms/structure.py
@@ -111,7 +111,7 @@ class DetectStructure:
         expr = self.opts.start_reading_at
         try:
             expr = XPath(expr)
-        except:
+        except Exception:
             self.log.warn(
                 f'Invalid start reading at XPath expression, ignoring: {expr}')
             return
@@ -151,7 +151,7 @@ class DetectStructure:
                 ans = XPath(expr)(doc)
                 len(ans)
                 return ans
-            except:
+            except Exception:
                 self.log.warn(f'Invalid chapter expression, ignoring: {expr}')
                 return []
 
@@ -263,7 +263,7 @@ class DetectStructure:
                 ans = XPath(expr)(doc)
                 len(ans)
                 return ans
-            except:
+            except Exception:
                 self.log.warn(f'Invalid ToC expression, ignoring: {expr}')
                 return []
 
diff --git a/src/calibre/ebooks/oeb/transforms/trimmanifest.py b/src/calibre/ebooks/oeb/transforms/trimmanifest.py
index b3c1aa6469..1c5eb93e29 100644
--- a/src/calibre/ebooks/oeb/transforms/trimmanifest.py
+++ b/src/calibre/ebooks/oeb/transforms/trimmanifest.py
@@ -51,7 +51,7 @@ class ManifestTrimmer:
                             href = href.decode('utf-8')
                         try:
                             href = item.abshref(urlnormalize(href))
-                        except:
+                        except Exception:
                             continue
                         if href in oeb.manifest.hrefs:
                             found = oeb.manifest.hrefs[href]
diff --git a/src/calibre/ebooks/pdb/plucker/reader.py b/src/calibre/ebooks/pdb/plucker/reader.py
index e156f01de3..a890419030 100644
--- a/src/calibre/ebooks/pdb/plucker/reader.py
+++ b/src/calibre/ebooks/pdb/plucker/reader.py
@@ -455,7 +455,7 @@ class Reader(FormatReader):
             home_html = self.header_record.home_html
             if not home_html:
                 home_html = self.uid_text_secion_number.items()[0][0]
-        except:
+        except Exception:
             raise Exception('Could not determine home.html')
         # Generate oeb from html conversion.
         oeb = html_input.convert(open(f'{home_html}.html', 'rb'), self.options, 'html', self.log, {})
diff --git a/src/calibre/ebooks/pdf/pdftohtml.py b/src/calibre/ebooks/pdf/pdftohtml.py
index 90e8078c3b..a239bf5e38 100644
--- a/src/calibre/ebooks/pdf/pdftohtml.py
+++ b/src/calibre/ebooks/pdf/pdftohtml.py
@@ -110,7 +110,7 @@ def pdftohtml(output_dir, pdf_path, no_images, as_xml=False):
 
         try:
             os.remove(pdfsrc)
-        except:
+        except Exception:
             pass
 
 
diff --git a/src/calibre/ebooks/pml/pmlml.py b/src/calibre/ebooks/pml/pmlml.py
index c11651ac5c..584cb3f94d 100644
--- a/src/calibre/ebooks/pml/pmlml.py
+++ b/src/calibre/ebooks/pml/pmlml.py
@@ -332,7 +332,7 @@ class PMLMLizer:
             mms = int(float(style['margin-left']) * 100 / style.height)
             if mms:
                 text.append(rf'\T="{mms}%"')
-        except:
+        except Exception:
             pass
 
         # Soft scene breaks.
@@ -340,7 +340,7 @@ class PMLMLizer:
             ems = round((float(style.marginTop) / style.fontSize) - 1)
             if ems >= 1:
                 text.append('\n\\c \n\\c\n')
-        except:
+        except Exception:
             pass
 
         # Process text within this tag.
diff --git a/src/calibre/ebooks/rtf2xml/check_brackets.py b/src/calibre/ebooks/rtf2xml/check_brackets.py
index b53c3e52d8..2954ab4000 100644
--- a/src/calibre/ebooks/rtf2xml/check_brackets.py
+++ b/src/calibre/ebooks/rtf2xml/check_brackets.py
@@ -35,7 +35,7 @@ class CheckBrackets:
         num = line[-5:-1]
         try:
             last_num = self.__open_bracket_num.pop()
-        except:
+        except Exception:
             return False
         if num != last_num:
             return False
diff --git a/src/calibre/ebooks/rtf2xml/colors.py b/src/calibre/ebooks/rtf2xml/colors.py
index ef42033eee..9a231e99c2 100644
--- a/src/calibre/ebooks/rtf2xml/colors.py
+++ b/src/calibre/ebooks/rtf2xml/colors.py
@@ -247,7 +247,7 @@ class Colors:
                         try:
                             sys.stderr.write('no matching state in module fonts.py\n')
                             sys.stderr.write(self.__state + '\n')
-                        except:
+                        except Exception:
                             pass
                     action(line)
         copy_obj = copy.Copy(bug_handler=self.__bug_handler)
diff --git a/src/calibre/ebooks/rtf2xml/configure_txt.py b/src/calibre/ebooks/rtf2xml/configure_txt.py
index f0713b3c7b..9395377791 100644
--- a/src/calibre/ebooks/rtf2xml/configure_txt.py
+++ b/src/calibre/ebooks/rtf2xml/configure_txt.py
@@ -133,7 +133,7 @@ class Configure:
                 try:
                     int_num = int(return_dict[int_option])
                     return_dict[int_option] = int_num
-                except:
+                except Exception:
                     sys.stderr.write(f'"{int_option}" must be a number\n')
                     sys.stderr.write(f'You choose "{return_dict[int_option]}" ')
                     return 1
diff --git a/src/calibre/ebooks/rtf2xml/convert_to_tags.py b/src/calibre/ebooks/rtf2xml/convert_to_tags.py
index ac3fedb363..c31a39af62 100644
--- a/src/calibre/ebooks/rtf2xml/convert_to_tags.py
+++ b/src/calibre/ebooks/rtf2xml/convert_to_tags.py
@@ -128,7 +128,7 @@ class ConvertToTags:
                 self.__write_obj.write(
                 f' {val}="{att}"'
                 )
-            except:
+            except Exception:
                 if self.__run_level > 3:
                     msg = 'index out of range\n'
                     raise self.__bug_handler(msg)
diff --git a/src/calibre/ebooks/rtf2xml/old_rtf.py b/src/calibre/ebooks/rtf2xml/old_rtf.py
index d63bcda39c..ac0b26f80c 100644
--- a/src/calibre/ebooks/rtf2xml/old_rtf.py
+++ b/src/calibre/ebooks/rtf2xml/old_rtf.py
@@ -127,7 +127,7 @@ class OldRtf:
                 if action is None:
                     try:
                         sys.stderr.write('No action for this state!\n')
-                    except:
+                    except Exception:
                         pass
                 result = action(line)
                 if result == 'new_rtf':
diff --git a/src/calibre/ebooks/rtf2xml/paragraphs.py b/src/calibre/ebooks/rtf2xml/paragraphs.py
index 1a4477c54e..d44250939c 100644
--- a/src/calibre/ebooks/rtf2xml/paragraphs.py
+++ b/src/calibre/ebooks/rtf2xml/paragraphs.py
@@ -254,7 +254,7 @@ class Paragraphs:
                         try:
                             sys.stderr.write('no matching state in module paragraphs.py\n')
                             sys.stderr.write(self.__state + '\n')
-                        except:
+                        except Exception:
                             pass
                     action(line)
         copy_obj = copy.Copy(bug_handler=self.__bug_handler)
diff --git a/src/calibre/ebooks/rtf2xml/pict.py b/src/calibre/ebooks/rtf2xml/pict.py
index ca8d022468..0b884a4970 100644
--- a/src/calibre/ebooks/rtf2xml/pict.py
+++ b/src/calibre/ebooks/rtf2xml/pict.py
@@ -168,7 +168,7 @@ class Pict:
             copy_obj.copy_file(self.__write_to, 'pict.data')
             try:
                 copy_obj.copy_file(self.__pict_file, 'pict.rtf')
-            except:
+            except Exception:
                 pass
         copy_obj.rename(self.__write_to, self.__file)
         os.remove(self.__write_to)
diff --git a/src/calibre/ebooks/rtf2xml/process_tokens.py b/src/calibre/ebooks/rtf2xml/process_tokens.py
index 0cf65747ca..0a8a849059 100644
--- a/src/calibre/ebooks/rtf2xml/process_tokens.py
+++ b/src/calibre/ebooks/rtf2xml/process_tokens.py
@@ -757,7 +757,7 @@ class ProcessTokens:
         try:
             hex_num = f'{num:X}'
             return hex_num
-        except:
+        except Exception:
             raise self.__bug_handler
 
     def process_cw(self, token):
diff --git a/src/calibre/ebooks/txt/txtml.py b/src/calibre/ebooks/txt/txtml.py
index 99b25705f4..5051f778ee 100644
--- a/src/calibre/ebooks/txt/txtml.py
+++ b/src/calibre/ebooks/txt/txtml.py
@@ -236,7 +236,7 @@ class TXTMLizer:
             ems = round((float(style.marginTop) / style.fontSize) - 1)
             if ems >= 1:
                 text.append('\n' * ems)
-        except:
+        except Exception:
             pass
 
         # Process tags that contain text.
diff --git a/src/calibre/ebooks/unihandecode/unidecoder.py b/src/calibre/ebooks/unihandecode/unidecoder.py
index 0bac7ed26e..5b4f2c1341 100644
--- a/src/calibre/ebooks/unihandecode/unidecoder.py
+++ b/src/calibre/ebooks/unihandecode/unidecoder.py
@@ -85,7 +85,7 @@ class Unidecoder:
             # represents the position in the list of characters for the group.
             return self.codepoints[self.code_group(codepoint)][self.grouped_point(
                 codepoint)]
-        except:
+        except Exception:
             return '?'
 
     def code_group(self, character):
diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index a5893d2c39..c039c4d7a9 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -667,7 +667,7 @@ def is_widescreen():
     if _is_widescreen is None:
         try:
             _is_widescreen = available_width()/available_height() > 1.4
-        except:
+        except Exception:
             _is_widescreen = False
     return _is_widescreen
 
@@ -844,7 +844,7 @@ class FunctionDispatcher(QObject):
     def dispatch(self, q, args, kwargs):
         try:
             res = self.func(*args, **kwargs)
-        except:
+        except Exception:
             res = None
         q.put(res)
 
@@ -875,7 +875,7 @@ class GetMetadata(QObject):
         from calibre.ebooks.metadata.meta import metadata_from_formats
         try:
             mi = metadata_from_formats(*args, **kwargs)
-        except:
+        except Exception:
             mi = MetaInformation('', [_('Unknown')])
         self.metadataf.emit(id, mi)
 
@@ -883,7 +883,7 @@ class GetMetadata(QObject):
         from calibre.ebooks.metadata.meta import get_metadata
         try:
             mi = get_metadata(*args, **kwargs)
-        except:
+        except Exception:
             mi = MetaInformation('', [_('Unknown')])
         self.metadata.emit(id, mi)
 
@@ -1083,7 +1083,7 @@ class Translator(QTranslator):
     def translate(self, *args, **kwargs):
         try:
             src = str(args[1])
-        except:
+        except Exception:
             return ''
         t = _
         return t(src)
diff --git a/src/calibre/gui2/actions/__init__.py b/src/calibre/gui2/actions/__init__.py
index 041d0ce011..2bd5aa2cec 100644
--- a/src/calibre/gui2/actions/__init__.py
+++ b/src/calibre/gui2/actions/__init__.py
@@ -262,7 +262,7 @@ class InterfaceAction(QObject):
                 except NameConflict as e:
                     try:
                         prints(str(e))
-                    except:
+                    except Exception:
                         pass
                     shortcut_action.setShortcuts([QKeySequence(key,
                         QKeySequence.SequenceFormat.PortableText) for key in keys])
diff --git a/src/calibre/gui2/actions/add.py b/src/calibre/gui2/actions/add.py
index 202cef8b2f..dd110886d1 100644
--- a/src/calibre/gui2/actions/add.py
+++ b/src/calibre/gui2/actions/add.py
@@ -455,7 +455,7 @@ class AddAction(InterfaceAction):
             self.add_by_isbn_ids.add(db.import_book(mi, fmts))
             self.isbn_add_dialog.value += 1
             QTimer.singleShot(10, self.do_one_isbn_add)
-        except:
+        except Exception:
             self.isbn_add_dialog.accept()
             raise
 
diff --git a/src/calibre/gui2/actions/annotate.py b/src/calibre/gui2/actions/annotate.py
index ffcd4c32e0..9cf9f28c8b 100644
--- a/src/calibre/gui2/actions/annotate.py
+++ b/src/calibre/gui2/actions/annotate.py
@@ -50,7 +50,7 @@ class Updater(QThread):  # {{{
                     self.annotation_map[id_][1])
             try:
                 self.device.add_annotation_to_library(self.db, id_, bm)
-            except:
+            except Exception:
                 import traceback
                 self.errors[id_] = traceback.format_exc()
             self.update_progress.emit(i)
diff --git a/src/calibre/gui2/actions/choose_library.py b/src/calibre/gui2/actions/choose_library.py
index e274f835d4..de25d867c3 100644
--- a/src/calibre/gui2/actions/choose_library.py
+++ b/src/calibre/gui2/actions/choose_library.py
@@ -227,7 +227,7 @@ class BackupStatus(QDialog):  # {{{
         dirty_text = 'no'
         try:
             dirty_text = f'{db.dirty_queue_length()}'
-        except:
+        except Exception:
             dirty_text = _('none')
         self.msg.setText('
' + _(
             'Book metadata files remaining to be written: %s') % dirty_text)
@@ -605,7 +605,7 @@ class ChooseLibraryAction(InterfaceAction):
         self.gui.library_broker.remove_library(loc)
         try:
             os.rename(loc, newloc)
-        except:
+        except Exception:
             import traceback
             det_msg = f'Location: {loc!r} New Location: {newloc!r}\n{traceback.format_exc()}'
             error_dialog(self.gui, _('Rename failed'),
diff --git a/src/calibre/gui2/actions/convert.py b/src/calibre/gui2/actions/convert.py
index cfc623e94b..c5dc7a4616 100644
--- a/src/calibre/gui2/actions/convert.py
+++ b/src/calibre/gui2/actions/convert.py
@@ -264,7 +264,7 @@ class ConvertAction(InterfaceActionWithLibraryDrop):
                 try:
                     if os.path.exists(f.name):
                         os.remove(f.name)
-                except:
+                except Exception:
                     pass
         self.gui.tags_view.recount()
         if self.gui.current_view() is self.gui.library_view:
diff --git a/src/calibre/gui2/actions/copy_to_library.py b/src/calibre/gui2/actions/copy_to_library.py
index 2ca99840d7..1dec03ba2e 100644
--- a/src/calibre/gui2/actions/copy_to_library.py
+++ b/src/calibre/gui2/actions/copy_to_library.py
@@ -153,7 +153,7 @@ class Worker(Thread):  # {{{
             import traceback
             try:
                 err = str(err)
-            except:
+            except Exception:
                 err = repr(err)
             self.error = (err, traceback.format_exc())
 
diff --git a/src/calibre/gui2/actions/delete.py b/src/calibre/gui2/actions/delete.py
index e268243f8b..fc820af89f 100644
--- a/src/calibre/gui2/actions/delete.py
+++ b/src/calibre/gui2/actions/delete.py
@@ -54,7 +54,7 @@ class MultiDeleter(QObject):  # {{{
             self.model.db.delete_book(id_, notify=False, commit=False,
                     permanent=False)
             self.deleted_ids.append(id_)
-        except:
+        except Exception:
             import traceback
             self.failures.append((id_, title, traceback.format_exc()))
         single_shot(self.delete_one)
diff --git a/src/calibre/gui2/actions/edit_metadata.py b/src/calibre/gui2/actions/edit_metadata.py
index 4b1da92a46..cde671a23b 100644
--- a/src/calibre/gui2/actions/edit_metadata.py
+++ b/src/calibre/gui2/actions/edit_metadata.py
@@ -247,7 +247,7 @@ class EditMetadataAction(InterfaceActionWithLibraryDrop):
     def cleanup_bulk_download(self, tdir, *args):
         try:
             shutil.rmtree(tdir, ignore_errors=True)
-        except:
+        except Exception:
             pass
 
     def metadata_downloaded(self, job):
@@ -819,14 +819,14 @@ class EditMetadataAction(InterfaceActionWithLibraryDrop):
             db.set_metadata(book_id, mi, commit=False, set_title=set_title,
                     set_authors=set_authors, notify=False)
             self.applied_ids.add(book_id)
-        except:
+        except Exception:
             import traceback
             self.apply_failures.append((book_id, traceback.format_exc()))
 
         try:
             if mi.cover:
                 os.remove(mi.cover)
-        except:
+        except Exception:
             pass
 
     def finalize_apply(self):
diff --git a/src/calibre/gui2/actions/fetch_news.py b/src/calibre/gui2/actions/fetch_news.py
index b143987676..9549c49575 100644
--- a/src/calibre/gui2/actions/fetch_news.py
+++ b/src/calibre/gui2/actions/fetch_news.py
@@ -79,7 +79,7 @@ class FetchNewsAction(InterfaceAction):
         # delete all but newest x issues.
         try:
             keep_issues = int(arg['keep_issues'])
-        except:
+        except Exception:
             keep_issues = 0
         if keep_issues > 0:
             ids_with_tag = list(sorted(self.gui.library_view.model().
diff --git a/src/calibre/gui2/actions/mark_books.py b/src/calibre/gui2/actions/mark_books.py
index d2b94308f5..a18a503d47 100644
--- a/src/calibre/gui2/actions/mark_books.py
+++ b/src/calibre/gui2/actions/mark_books.py
@@ -132,7 +132,7 @@ class MarkBooksAction(InterfaceActionWithLibraryDrop):
             try:
                 w = x.widgetForAction(self.qaction)
                 w.installEventFilter(self)
-            except:
+            except Exception:
                 continue
 
     def eventFilter(self, obj, ev):
diff --git a/src/calibre/gui2/actions/polish.py b/src/calibre/gui2/actions/polish.py
index 8e00177558..649c28f195 100644
--- a/src/calibre/gui2/actions/polish.py
+++ b/src/calibre/gui2/actions/polish.py
@@ -288,7 +288,7 @@ class Polish(QDialog):  # {{{
         num, book_id = self.queue.pop(0)
         try:
             self.do_book(num, book_id, self.book_id_map[book_id])
-        except:
+        except Exception:
             self.pd.reject()
             raise
         else:
@@ -543,7 +543,7 @@ class PolishAction(InterfaceActionWithLibraryDrop):
             shutil.rmtree(base)
             parent = os.path.dirname(base)
             os.rmdir(parent)
-        except:
+        except Exception:
             pass
         self.to_be_refreshed.add(book_id)
         self.refresh_debounce_timer.start()
diff --git a/src/calibre/gui2/actions/unpack_book.py b/src/calibre/gui2/actions/unpack_book.py
index d32f09f4f4..15e116f54f 100644
--- a/src/calibre/gui2/actions/unpack_book.py
+++ b/src/calibre/gui2/actions/unpack_book.py
@@ -178,7 +178,7 @@ class UnpackBook(QDialog):
         except Error as e:
             return error_dialog(self, _('Failed to unpack'),
                 (_('Could not explode the %s file.')%self.current_format) + ' ' + as_unicode(e), show=True)
-        except:
+        except Exception:
             import traceback
             det_msg = traceback.format_exc()
         finally:
@@ -213,7 +213,7 @@ class UnpackBook(QDialog):
             rebuilder(src_dir, of)
         except WorkerError as e:
             det_msg = e.orig_tb
-        except:
+        except Exception:
             import traceback
             det_msg = traceback.format_exc()
         finally:
@@ -258,19 +258,19 @@ class UnpackBook(QDialog):
                 import appscript
                 self.finder = appscript.app('Finder')
                 self.finder.Finder_windows[os.path.basename(self._exploded)].close()
-            except:
+            except Exception:
                 pass
 
         for f in self._cleanup_files:
             try:
                 os.remove(f)
-            except:
+            except Exception:
                 pass
 
         for d in self._cleanup_dirs:
             try:
                 shutil.rmtree(d)
-            except:
+            except Exception:
                 pass
 
     @property
diff --git a/src/calibre/gui2/actions/view.py b/src/calibre/gui2/actions/view.py
index f5b16ba0b8..2203853981 100644
--- a/src/calibre/gui2/actions/view.py
+++ b/src/calibre/gui2/actions/view.py
@@ -341,7 +341,7 @@ class ViewAction(InterfaceAction):
         for id_ in ids:
             try:
                 title = db.title(id_, index_is_id=True)
-            except:
+            except Exception:
                 error_dialog(self.gui, _('Cannot view'),
                     _('This book no longer exists in your library'), show=True)
                 self.update_history([], remove={id_})
diff --git a/src/calibre/gui2/auto_add.py b/src/calibre/gui2/auto_add.py
index 5bf5b7b8af..091278d84a 100644
--- a/src/calibre/gui2/auto_add.py
+++ b/src/calibre/gui2/auto_add.py
@@ -75,7 +75,7 @@ class Worker(Thread):
                     break
                 try:
                     self.auto_add()
-                except:
+                except Exception:
                     import traceback
                     traceback.print_exc()
         finally:
@@ -120,7 +120,7 @@ class Worker(Thread):
             # QFileSystemWatcher when writing is completed, so ignore for now.
             try:
                 open(make_long_path_useable(f), 'rb').close()
-            except:
+            except Exception:
                 continue
             tdir = tempfile.mkdtemp(dir=self.tdir)
             try:
@@ -129,7 +129,7 @@ class Worker(Thread):
             except WorkerError as e:
                 prints('Failed to read metadata from:', fname)
                 prints(e.orig_tb)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
 
@@ -139,7 +139,7 @@ class Worker(Thread):
             try:
                 with open(szpath, 'rb') as f:
                     int(f.read())
-            except:
+            except Exception:
                 with open(szpath, 'wb') as f:
                     f.write(b'0')
 
@@ -147,7 +147,7 @@ class Worker(Thread):
             try:
                 if os.stat(opfpath).st_size < 30:
                     raise Exception('metadata reading failed')
-            except:
+            except Exception:
                 mi = metadata_from_filename(fname)
                 with open(opfpath, 'wb') as f:
                     f.write(metadata_to_opf(mi))
@@ -186,7 +186,7 @@ class AutoAdder(QObject):
         try:
             if os.listdir(self.worker.path):
                 self.dir_changed()
-        except:
+        except Exception:
             pass
         self.watcher.addPath(self.worker.path)
 
@@ -244,7 +244,7 @@ class AutoAdder(QObject):
                 if sz != os.stat(make_long_path_useable(paths[0])).st_size:
                     raise Exception('Looks like the file was written to after'
                             ' we tried to read metadata')
-            except:
+            except Exception:
                 needs_rescan = True
                 try:
                     self.worker.staging.remove(fname)
@@ -281,7 +281,7 @@ class AutoAdder(QObject):
             try:
                 os.remove(make_long_path_useable(path_to_remove))
                 self.worker.staging.remove(fname)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
             count += num
@@ -310,7 +310,7 @@ class AutoAdder(QObject):
         for fname, tdir in data:
             try:
                 shutil.rmtree(tdir)
-            except:
+            except Exception:
                 pass
 
         if added_ids and gprefs['auto_add_auto_convert']:
diff --git a/src/calibre/gui2/book_details.py b/src/calibre/gui2/book_details.py
index 45c5d9b0a4..835f566179 100644
--- a/src/calibre/gui2/book_details.py
+++ b/src/calibre/gui2/book_details.py
@@ -842,7 +842,7 @@ class CoverView(QWidget):  # {{{
         try:
             self.pwidth, self.pheight = fit_image(pwidth, pheight,
                             self.rect().width(), self.rect().height())[1:]
-        except:
+        except Exception:
             self.pwidth, self.pheight = self.rect().width()-1, \
                     self.rect().height()-1
         self.current_pixmap_size = QSize(self.pwidth, self.pheight)
@@ -1055,7 +1055,7 @@ class CoverView(QWidget):  # {{{
     def update_tooltip(self, current_path):
         try:
             sz = self.pixmap.size()
-        except:
+        except Exception:
             sz = QSize(0, 0)
         self.setToolTip(
             '
'+_('Double click to open the Book details window') +
@@ -1302,7 +1302,7 @@ class DetailsLayout(QSplitter):  # {{{
         mh = min(int(r.height()//2), int(4/3 * r.width())+1)
         try:
             ph = self._children[0].pixmap.height()
-        except:
+        except Exception:
             ph = 0
         if ph > 0:
             mh = min(mh, ph)
@@ -1314,7 +1314,7 @@ class DetailsLayout(QSplitter):  # {{{
         mw = 1 + int(3/4 * r.height())
         try:
             pw = self._children[0].pixmap.width()
-        except:
+        except Exception:
             pw = 0
         if pw > 0:
             mw = min(mw, pw)
diff --git a/src/calibre/gui2/catalog/catalog_epub_mobi.py b/src/calibre/gui2/catalog/catalog_epub_mobi.py
index 22887d8aee..f8cc0487b1 100644
--- a/src/calibre/gui2/catalog/catalog_epub_mobi.py
+++ b/src/calibre/gui2/catalog/catalog_epub_mobi.py
@@ -229,7 +229,7 @@ class PluginWidget(QWidget, Ui_Form):
 
         try:
             pattern = re.compile(regex)
-        except:
+        except Exception:
             results = _('regex error: %s') % sys.exc_info()[1]
         else:
             excluded_tags = []
@@ -545,7 +545,7 @@ class PluginWidget(QWidget, Ui_Form):
         # Append the output profile
         try:
             opts_dict['output_profile'] = [load_defaults('page_setup')['output_profile']]
-        except:
+        except Exception:
             opts_dict['output_profile'] = ['default']
 
         if False and self.DEBUG:
@@ -732,7 +732,7 @@ class PluginWidget(QWidget, Ui_Form):
         names.extend(self.preset_field_values)
         try:
             dex = names.index(self.preset_search_name)
-        except:
+        except Exception:
             dex = 0
         name = ''
         while not name:
@@ -806,7 +806,7 @@ class PluginWidget(QWidget, Ui_Form):
         # Append the current output profile
         try:
             preset['output_profile'] = load_defaults('page_setup')['output_profile']
-        except:
+        except Exception:
             preset['output_profile'] = 'default'
 
         self.presets[name] = preset
diff --git a/src/calibre/gui2/convert/__init__.py b/src/calibre/gui2/convert/__init__.py
index 13ccdc23bc..7fdf243150 100644
--- a/src/calibre/gui2/convert/__init__.py
+++ b/src/calibre/gui2/convert/__init__.py
@@ -179,7 +179,7 @@ class Widget(QWidget):
             ans = str(g.currentText()).strip()
             try:
                 codecs.lookup(ans)
-            except:
+            except Exception:
                 ans = ''
             if not ans:
                 ans = None
@@ -270,7 +270,7 @@ class Widget(QWidget):
         if msg and getattr(msg, 'strip', lambda:True)():
             try:
                 self.set_help_signal.emit(msg)
-            except:
+            except Exception:
                 pass
 
     def setup_help(self, help_provider):
diff --git a/src/calibre/gui2/convert/bulk.py b/src/calibre/gui2/convert/bulk.py
index e0e2034524..50a12891f1 100644
--- a/src/calibre/gui2/convert/bulk.py
+++ b/src/calibre/gui2/convert/bulk.py
@@ -111,7 +111,7 @@ class BulkConfig(Config):
         self.show_pane(idx)
         try:
             shutil.rmtree(self.plumber.archive_input_tdir, ignore_errors=True)
-        except:
+        except Exception:
             pass
 
     def setup_output_formats(self, db, preferred_output_format):
diff --git a/src/calibre/gui2/convert/debug.py b/src/calibre/gui2/convert/debug.py
index 55f5e7fae9..985a116bcd 100644
--- a/src/calibre/gui2/convert/debug.py
+++ b/src/calibre/gui2/convert/debug.py
@@ -43,7 +43,7 @@ class DebugWidget(Widget, Ui_Form):
                 test = os.path.join(x, 'test')
                 open(test, 'wb').close()
                 os.remove(test)
-        except:
+        except Exception:
             import traceback
             det_msg = traceback.format_exc()
             error_dialog(self, _('Invalid debug folder'),
diff --git a/src/calibre/gui2/convert/font_key.py b/src/calibre/gui2/convert/font_key.py
index a8b44184b1..27725ec16e 100644
--- a/src/calibre/gui2/convert/font_key.py
+++ b/src/calibre/gui2/convert/font_key.py
@@ -78,7 +78,7 @@ class FontKeyChooser(QDialog, Ui_Dialog):
         fsize = self.input_font_size.value()
         try:
             fsizes = self.fsizes
-        except:
+        except Exception:
             return
 
         if dbase == 0.0 or not fsizes:
diff --git a/src/calibre/gui2/convert/heuristics.py b/src/calibre/gui2/convert/heuristics.py
index 50afe83314..53ac641d84 100644
--- a/src/calibre/gui2/convert/heuristics.py
+++ b/src/calibre/gui2/convert/heuristics.py
@@ -59,7 +59,7 @@ class HeuristicsWidget(Widget, Ui_Form):
         try:
             self.opt_enable_heuristics.stateChanged.disconnect()
             self.opt_unwrap_lines.stateChanged.disconnect()
-        except:
+        except Exception:
             pass
 
     def set_value_handler(self, g, val):
diff --git a/src/calibre/gui2/convert/metadata.py b/src/calibre/gui2/convert/metadata.py
index b8bb142fc1..697b48e1bf 100644
--- a/src/calibre/gui2/convert/metadata.py
+++ b/src/calibre/gui2/convert/metadata.py
@@ -103,7 +103,7 @@ class MetadataWidget(Widget, Ui_Form):
         if mi.series_index is not None:
             try:
                 self.series_index.setValue(mi.series_index)
-            except:
+            except Exception:
                 self.series_index.setValue(1.0)
 
         cover = self.db.cover(self.book_id, index_is_id=True)
diff --git a/src/calibre/gui2/convert/regex_builder.py b/src/calibre/gui2/convert/regex_builder.py
index 55574921b2..0ab0c5e633 100644
--- a/src/calibre/gui2/convert/regex_builder.py
+++ b/src/calibre/gui2/convert/regex_builder.py
@@ -60,7 +60,7 @@ class RegexBuilder(QDialog, Ui_RegexBuilder):
                 compile_regular_expression(regex)
                 self.regex.setStyleSheet('QLineEdit { color: black; background-color: rgba(0,255,0,20%); }')
                 return True
-            except:
+            except Exception:
                 self.regex.setStyleSheet('QLineEdit { color: black; background-color: rgba(255,0,0,20%); }')
         else:
             self.regex.setStyleSheet('QLineEdit { color: black; background-color: white; }')
@@ -173,7 +173,7 @@ class RegexBuilder(QDialog, Ui_RegexBuilder):
         finally:
             try:
                 os.remove(fpath)
-            except:
+            except Exception:
                 # Fails on windows if the input plugin for this format keeps the file open
                 # Happens for LIT files
                 pass
@@ -189,7 +189,7 @@ class RegexBuilder(QDialog, Ui_RegexBuilder):
             except WorkerError as e:
                 return error_dialog(self, _('Failed to generate preview'),
                         err_msg, det_msg=str(e) + '\n\n' + e.orig_tb, show=True)
-            except:
+            except Exception:
                 import traceback
                 return error_dialog(self, _('Failed to generate preview'),
                         err_msg, det_msg=traceback.format_exc(), show=True)
diff --git a/src/calibre/gui2/convert/search_and_replace.py b/src/calibre/gui2/convert/search_and_replace.py
index 52b9c6ec52..6fc6c5ec78 100644
--- a/src/calibre/gui2/convert/search_and_replace.py
+++ b/src/calibre/gui2/convert/search_and_replace.py
@@ -170,7 +170,7 @@ class SearchAndReplaceWidget(Widget, Ui_Form):
         def d(x):
             try:
                 x.disconnect()
-            except:
+            except Exception:
                 pass
 
         d(self.sr_search)
@@ -242,7 +242,7 @@ class SearchAndReplaceWidget(Widget, Ui_Form):
             rowItems = json.loads(val)
             if not isinstance(rowItems, list):
                 rowItems = []
-        except:
+        except Exception:
             rowItems = []
 
         if len(rowItems) == 0:
diff --git a/src/calibre/gui2/convert/single.py b/src/calibre/gui2/convert/single.py
index 4947fea16f..36d2e31ee3 100644
--- a/src/calibre/gui2/convert/single.py
+++ b/src/calibre/gui2/convert/single.py
@@ -61,7 +61,7 @@ class GroupModel(QAbstractListModel):
     def data(self, index, role):
         try:
             widget = self.widgets[index.row()]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DisplayRole:
             return (widget.config_title())
diff --git a/src/calibre/gui2/convert/xpath_wizard.py b/src/calibre/gui2/convert/xpath_wizard.py
index e54077ad98..70c9562af2 100644
--- a/src/calibre/gui2/convert/xpath_wizard.py
+++ b/src/calibre/gui2/convert/xpath_wizard.py
@@ -127,7 +127,7 @@ class XPathEdit(QWidget):
         try:
             if self.text.strip():
                 XPath(self.text)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             return False
diff --git a/src/calibre/gui2/cover_flow.py b/src/calibre/gui2/cover_flow.py
index 9b92e29a80..3914229fe6 100644
--- a/src/calibre/gui2/cover_flow.py
+++ b/src/calibre/gui2/cover_flow.py
@@ -506,7 +506,7 @@ class CoverFlowMixin:
                 if self.library_view.currentIndex().row() != row and index.isValid():
                     self.cover_flow_sync_flag = False
                     self.library_view.select_rows([row], using_ids=False)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         if self.cover_flow_syncing_enabled:
diff --git a/src/calibre/gui2/custom_column_widgets.py b/src/calibre/gui2/custom_column_widgets.py
index 9666b72695..35ead3a77a 100644
--- a/src/calibre/gui2/custom_column_widgets.py
+++ b/src/calibre/gui2/custom_column_widgets.py
@@ -69,7 +69,7 @@ def label_string(txt):
         try:
             if txt[0].isalnum():
                 return '&' + txt
-        except:
+        except Exception:
             pass
     return txt
 
@@ -95,10 +95,10 @@ class Base:
         try:
             self.widgets[0].setToolTip(description)
             self.widgets[1].setToolTip(description)
-        except:
+        except Exception:
             try:
                 self.widgets[1].setToolTip(description)
-            except:
+            except Exception:
                 pass
 
     @property
diff --git a/src/calibre/gui2/device.py b/src/calibre/gui2/device.py
index 220ddd9221..c4013020bf 100644
--- a/src/calibre/gui2/device.py
+++ b/src/calibre/gui2/device.py
@@ -94,7 +94,7 @@ class DeviceJob(BaseJob):  # {{{
 
         try:
             self.callback_on_done(self)
-        except:
+        except Exception:
             pass
         if DEBUG:
             prints('DeviceJob:', self.id, self.description,
@@ -255,7 +255,7 @@ class DeviceManager(Thread):  # {{{
                 continue
             except OpenFailed:
                 raise
-            except:
+            except Exception:
                 tb = traceback.format_exc()
                 if DEBUG or tb not in self.reported_errors:
                     self.reported_errors.add(tb)
@@ -296,7 +296,7 @@ class DeviceManager(Thread):  # {{{
                 break
         try:
             self.connected_device.post_yank_cleanup()
-        except:
+        except Exception:
             pass
         if self.connected_device in self.ejected_devices:
             self.ejected_devices.remove(self.connected_device)
@@ -345,7 +345,7 @@ class DeviceManager(Thread):  # {{{
             for dev in self.unmanaged_devices:
                 try:
                     cd = dev.detect_managed_devices(self.scanner.devices)
-                except:
+                except Exception:
                     prints(f'Error during device detection for {dev}:')
                     traceback.print_exc()
                 else:
@@ -358,7 +358,7 @@ class DeviceManager(Thread):  # {{{
                             if e.only_once_id not in self.open_feedback_only_once_seen:
                                 self.open_feedback_only_once_seen.add(e.only_once_id)
                                 self.open_feedback_msg(e.device_name, e)
-                        except:
+                        except Exception:
                             prints(f'Error while trying to open {cd} (Driver: {dev})')
                             traceback.print_exc()
                         else:
@@ -428,7 +428,7 @@ class DeviceManager(Thread):  # {{{
         try:
             name = dev.__class__.__name__
             dev.startup()
-        except:
+        except Exception:
             prints(f'Startup method for device {name} threw exception')
             traceback.print_exc()
 
@@ -502,7 +502,7 @@ class DeviceManager(Thread):  # {{{
         for p in self.devices:
             try:
                 p.shutdown()
-            except:
+            except Exception:
                 pass
 
     def create_job_step(self, func, done, description, to_job, args=[], kwargs={}):
@@ -522,7 +522,7 @@ class DeviceManager(Thread):  # {{{
     def has_card(self):
         try:
             return bool(self.device.card_prefix())
-        except:
+        except Exception:
             return False
 
     def _debug_detection(self):
@@ -654,7 +654,7 @@ class DeviceManager(Thread):  # {{{
                                 if nuke_comments is not None:
                                     mi.comments = nuke_comments
                                 set_metadata(stream, newmi, stream_type=ext)
-                        except:
+                        except Exception:
                             if DEBUG:
                                 prints(traceback.format_exc(), file=sys.__stdout__)
 
@@ -667,7 +667,7 @@ class DeviceManager(Thread):  # {{{
                     try:
                         if mi.cover:
                             os.remove(mi.cover)
-                    except:
+                    except Exception:
                         pass
 
     def upload_books(self, done, files, names, on_card=None, titles=None,
@@ -758,7 +758,7 @@ class DeviceManager(Thread):  # {{{
             d = self.dynamic_plugins.get(name, None)
             if d:
                 return True
-        except:
+        except Exception:
             pass
         return False
 
@@ -1131,17 +1131,17 @@ class DeviceMixin:  # {{{
                              'device. Please unplug and reconnect the device '
                              'or reboot.')).show()
                 return
-        except:
+        except Exception:
             pass
         if getattr(job, 'exception', None).__class__.__name__ == 'MTPInvalidSendPathError':
             try:
                 from calibre.gui2.device_drivers.mtp_config import SendError
                 return SendError(self, job.exception).exec()
-            except:
+            except Exception:
                 traceback.print_exc()
         try:
             prints(job.details, file=sys.stderr)
-        except:
+        except Exception:
             pass
         if not self.device_error_dialog.isVisible():
             self.device_error_dialog.set_details(job.details)
@@ -1316,7 +1316,7 @@ class DeviceMixin:  # {{{
             if not self.current_view().currentIndex().isValid():
                 self.current_view().set_current_row()
             self.current_view().refresh_book_details()
-        except:
+        except Exception:
             traceback.print_exc()
 
     def dispatch_sync_event(self, dest, delete, specific):
@@ -1399,7 +1399,7 @@ class DeviceMixin:  # {{{
                                  self.device_manager.device.THUMBNAIL_WIDTH,
                                  self.device_manager.device.THUMBNAIL_HEIGHT,
                                  preserve_aspect_ratio=False)
-            except:
+            except Exception:
                 pass
             return
         ht = self.device_manager.device.THUMBNAIL_HEIGHT \
@@ -1407,7 +1407,7 @@ class DeviceMixin:  # {{{
         try:
             return scale_image(data, ht, ht,
                     compression_quality=self.device_manager.device.THUMBNAIL_COMPRESSION_QUALITY)
-        except:
+        except Exception:
             pass
 
     def sync_catalogs(self, send_ids=None, do_auto_convert=True):
@@ -1472,7 +1472,7 @@ class DeviceMixin:  # {{{
         try:
             ans = self.library_view.model().db.new_api.pref('news_to_be_synced',
                     [])
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         return set(ans)
@@ -1482,7 +1482,7 @@ class DeviceMixin:  # {{{
         try:
             self.library_view.model().db.new_api.set_pref('news_to_be_synced',
                     list(ids))
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
 
@@ -1539,11 +1539,11 @@ class DeviceMixin:  # {{{
                 on_card = space.get(sorted(space.keys(), reverse=True)[0], None)
                 try:
                     total_size = sum(os.stat(f).st_size for f in files)
-                except:
+                except Exception:
                     try:
                         import traceback
                         traceback.print_exc()
-                    except:
+                    except Exception:
                         pass
                     total_size = self.location_manager.free[0]
                 loc = tweaks['send_news_to_device_location']
@@ -1743,7 +1743,7 @@ class DeviceMixin:  # {{{
         try:
             self.device_manager.add_books_to_metadata(job.result,
                     metadata, self.booklists())
-        except:
+        except Exception:
             traceback.print_exc()
             raise
 
@@ -1776,7 +1776,7 @@ class DeviceMixin:  # {{{
                             'KEEP_TEMP_FILES_AFTER_UPLOAD', False)
                     if rem and 'caltmpfmt.' in f:
                         os.remove(f)
-                except:
+                except Exception:
                     pass
 
     def update_metadata_on_device(self):
@@ -1861,7 +1861,7 @@ class DeviceMixin:  # {{{
         # library view. In this case, simply give up
         try:
             db = self.library_view.model().db
-        except:
+        except Exception:
             return False
 
         # Define the cleaning function
@@ -1949,7 +1949,7 @@ class DeviceMixin:  # {{{
                          max(book.thumbnail[0], book.thumbnail[1]) != desired_thumbnail_height
                         )
                        )
-            except:
+            except Exception:
                 return True
 
         def get_by_author(book, d, author):
@@ -2066,7 +2066,7 @@ class DeviceMixin:  # {{{
                            len(book_ids_to_refresh), 'books')
                     self.library_view.model().refresh_ids(book_ids_to_refresh,
                                       current_row=self.library_view.currentIndex().row())
-                except:
+                except Exception:
                     # This shouldn't ever happen, but just in case ...
                     traceback.print_exc()
 
@@ -2088,7 +2088,7 @@ class DeviceMixin:  # {{{
                             mi = db.new_api.get_metadata(id_, get_cover=True)
                             self.update_thumbnail(mi)
                             metadata.append(mi)
-                        except:
+                        except Exception:
                             prints('Problem creating temporary file for', fmt_name)
                             traceback.print_exc()
                     else:
@@ -2096,7 +2096,7 @@ class DeviceMixin:  # {{{
                             prints("DeviceJob: book doesn't have that format")
                 if files:
                     self.upload_books(files, names, metadata)
-            except:
+            except Exception:
                 # Shouldn't ever happen, but just in case
                 traceback.print_exc()
 
@@ -2110,7 +2110,7 @@ class DeviceMixin:  # {{{
                                  show=False,
                                  show_copy_button=True)
                     d.show()
-            except:
+            except Exception:
                 traceback.print_exc()
 
         debug_print('DeviceJob: set_books_in_library finished: time=', time.time() - start_time)
diff --git a/src/calibre/gui2/dialogs/catalog.py b/src/calibre/gui2/dialogs/catalog.py
index b84a5a75bf..2fa61641ef 100644
--- a/src/calibre/gui2/dialogs/catalog.py
+++ b/src/calibre/gui2/dialogs/catalog.py
@@ -227,7 +227,7 @@ class Catalog(QDialog, Ui_Dialog):
         if self.tabs.count() > 1 and hasattr(self.options_widget,'show_help'):
             try:
                 self.options_widget.show_help()
-            except:
+            except Exception:
                 info_dialog(self, _('No help available'),
                     _('No help available for this output format.'),
                     show_copy_button=False,
diff --git a/src/calibre/gui2/dialogs/check_library.py b/src/calibre/gui2/dialogs/check_library.py
index 751e1214ad..82228a9d13 100644
--- a/src/calibre/gui2/dialogs/check_library.py
+++ b/src/calibre/gui2/dialogs/check_library.py
@@ -513,7 +513,7 @@ class CheckLibraryDialog(QDialog):
                         delete_tree(p)
                     else:
                         delete_file(p)
-                except:
+                except Exception:
                     prints('failed to delete',
                             os.path.join(self.db.library_path,
                                 str(it.text(2))))
diff --git a/src/calibre/gui2/dialogs/confirm_delete_location.py b/src/calibre/gui2/dialogs/confirm_delete_location.py
index a15500be10..807503704c 100644
--- a/src/calibre/gui2/dialogs/confirm_delete_location.py
+++ b/src/calibre/gui2/dialogs/confirm_delete_location.py
@@ -63,7 +63,7 @@ class Dialog(QDialog):
             b = getattr(self, 'button_'+x)
             try:
                 b.clicked.disconnect()
-            except:
+            except Exception:
                 pass
 
 
diff --git a/src/calibre/gui2/dialogs/custom_recipes.py b/src/calibre/gui2/dialogs/custom_recipes.py
index 93d993f05d..50cf62e853 100644
--- a/src/calibre/gui2/dialogs/custom_recipes.py
+++ b/src/calibre/gui2/dialogs/custom_recipes.py
@@ -136,7 +136,7 @@ class CustomRecipeModel(QAbstractListModel):  # {{{
             try:
                 urn = self.recipe_model.custom_recipe_collection[r].get('id')
                 urns.append(urn)
-            except:
+            except Exception:
                 pass
         self.beginResetModel()
         self.recipe_model.remove_custom_recipes(urns)
diff --git a/src/calibre/gui2/dialogs/match_books.py b/src/calibre/gui2/dialogs/match_books.py
index fa3db9b776..1e9d045d55 100644
--- a/src/calibre/gui2/dialogs/match_books.py
+++ b/src/calibre/gui2/dialogs/match_books.py
@@ -58,7 +58,7 @@ class MatchBooks(QDialog, Ui_MatchBooks):
             self.books_table_column_widths = \
                         gprefs.get('match_books_dialog_books_table_widths', None)
             self.restore_geometry(gprefs, 'match_books_dialog_geometry')
-        except:
+        except Exception:
             pass
 
         self.search_text.initialize('match_books_dialog')
diff --git a/src/calibre/gui2/dialogs/metadata_bulk.py b/src/calibre/gui2/dialogs/metadata_bulk.py
index 35b57d8a35..06e5f78231 100644
--- a/src/calibre/gui2/dialogs/metadata_bulk.py
+++ b/src/calibre/gui2/dialogs/metadata_bulk.py
@@ -202,7 +202,7 @@ class MyBlockingBusy(QDialog):  # {{{
             import traceback
             try:
                 err = str(err)
-            except:
+            except Exception:
                 err = repr(err)
             self.error = (err, traceback.format_exc())
 
@@ -826,7 +826,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
         self.s_r_dst_ident.setCompleter(QCompleter(ident_types))
         try:
             self.s_r_dst_ident.setPlaceholderText(_('Enter an identifier type'))
-        except:
+        except Exception:
             pass
         self.s_r_src_ident.addItems(ident_types)
 
@@ -1105,7 +1105,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
                 v = int(val[0])
                 if v < 0 or v > 10:
                     ok = False
-            except:
+            except Exception:
                 ok = False
             if not ok:
                 raise Exception(_('The replacement value for a rating column must '
@@ -1232,7 +1232,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
                 else:
                     try:
                         val = dict([(t.split(':', maxsplit=1)) for t in val])
-                    except:
+                    except Exception:
                         import traceback
                         ans = question_dialog(self, _('Invalid identifier string'),
                                _('The identifier string for book "{0}" (id {1}) is '
@@ -1333,7 +1333,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
             return QDialog.accept(self)
         try:
             source = self.s_r_sf_itemdata(None)
-        except:
+        except Exception:
             source = ''
         do_sr = source and self.s_r_obj
 
@@ -1476,7 +1476,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
         names.extend(self.query_field_values)
         try:
             dex = names.index(self.saved_search_name)
-        except:
+        except Exception:
             dex = 0
         name = ''
         while not name:
@@ -1541,25 +1541,25 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
         def set_text(attr, key):
             try:
                 attr.setText(item[key])
-            except:
+            except Exception:
                 pass
 
         def set_checked(attr, key):
             try:
                 attr.setChecked(item[key])
-            except:
+            except Exception:
                 attr.setChecked(False)
 
         def set_value(attr, key):
             try:
                 attr.setValue(int(item[key]))
-            except:
+            except Exception:
                 attr.setValue(0)
 
         def set_index(attr, key):
             try:
                 attr.setCurrentIndex(attr.findText(item[key]))
-            except:
+            except Exception:
                 attr.setCurrentIndex(0)
 
         set_index(self.search_mode, 'search_mode')
diff --git a/src/calibre/gui2/dialogs/plugin_updater.py b/src/calibre/gui2/dialogs/plugin_updater.py
index 6ba69617db..5d7387a951 100644
--- a/src/calibre/gui2/dialogs/plugin_updater.py
+++ b/src/calibre/gui2/dialogs/plugin_updater.py
@@ -96,7 +96,7 @@ def read_available_plugins(raise_error=False):
         if not raw:
             return
         raw = json.loads(bz2.decompress(raw))
-    except:
+    except Exception:
         if raise_error:
             raise
         traceback.print_exc()
@@ -761,7 +761,7 @@ class PluginUpdaterDialog(SizePersistedDialog):
             display_plugin.plugin = plugin
             # We cannot read the 'actual' version information as the plugin will not be loaded yet
             display_plugin.installed_version = display_plugin.available_version
-        except:
+        except Exception:
             if DEBUG:
                 prints(f'ERROR occurred while installing plugin: {display_plugin.name}')
                 traceback.print_exc()
diff --git a/src/calibre/gui2/dialogs/quickview.py b/src/calibre/gui2/dialogs/quickview.py
index 547e04b80f..f2efa880d1 100644
--- a/src/calibre/gui2/dialogs/quickview.py
+++ b/src/calibre/gui2/dialogs/quickview.py
@@ -187,7 +187,7 @@ class Quickview(QDialog, Ui_Quickview):
                         gprefs.get('quickview_dialog_books_table_widths', None)
             if not self.is_pane:
                 self.restore_geometry(gprefs, 'quickview_dialog_geometry')
-        except:
+        except Exception:
             pass
 
         self.view = gui.library_view
@@ -501,7 +501,7 @@ class Quickview(QDialog, Ui_Quickview):
         # eventually.
         try:
             self.refresh(self.view.model().index(self.db.row(mi.id), self.current_column))
-        except:
+        except Exception:
             pass
 
     # clicks on the items listWidget
@@ -539,7 +539,7 @@ class Quickview(QDialog, Ui_Quickview):
             if self.current_book_id == book_id and self.current_key == key:
                 return
             self._refresh(book_id, key)
-        except:
+        except Exception:
             traceback.print_exc()
             self.indicate_no_items()
 
@@ -582,7 +582,7 @@ class Quickview(QDialog, Ui_Quickview):
                 if is_grid_view:
                     key = 'authors'
                     vals = mi.get(key, None)
-        except:
+        except Exception:
             traceback.print_exc()
 
         self.current_book_id = book_id
@@ -710,7 +710,7 @@ class Quickview(QDialog, Ui_Quickview):
             else:
                 v = mi.format_field(col)[1]
                 return v, v, 0
-        except:
+        except Exception:
             traceback.print_exc()
             return _('Something went wrong while filling in the table'), '', 0
 
@@ -754,7 +754,7 @@ class Quickview(QDialog, Ui_Quickview):
         try:
             self.db.data.index(book_id)
             return True
-        except:
+        except Exception:
             return False
 
     def quickview_item(self, row, column):
@@ -768,7 +768,7 @@ class Quickview(QDialog, Ui_Quickview):
                 self.quickview_item(row, column)
             else:
                 self.quickview_item(row, self.key_to_table_widget_column(self.current_key))
-        except:
+        except Exception:
             traceback.print_exc()
             self.book_not_in_view_error()
 
diff --git a/src/calibre/gui2/dialogs/scheduler.py b/src/calibre/gui2/dialogs/scheduler.py
index f70b581c21..20b4563426 100644
--- a/src/calibre/gui2/dialogs/scheduler.py
+++ b/src/calibre/gui2/dialogs/scheduler.py
@@ -193,7 +193,7 @@ class DaysOfMonth(Base):
                 x.strip()]
         try:
             days_of_month = tuple(map(int, parts))
-        except:
+        except Exception:
             days_of_month = (1,)
         if not days_of_month:
             days_of_month = (1,)
@@ -421,7 +421,7 @@ class SchedulerDialog(QDialog):
             self.recipe_model.searched.disconnect(self.search.search_done)
             self.search.search.disconnect()
             self.download.disconnect()
-        except:
+        except Exception:
             pass
         self.recipe_model = None
 
@@ -518,7 +518,7 @@ class SchedulerDialog(QDialog):
         recipe = self.recipe_model.recipe_from_urn(urn)
         try:
             schedule_info = self.recipe_model.schedule_info_from_urn(urn)
-        except:
+        except Exception:
             # Happens if user does something stupid like unchecking all the
             # days of the week
             schedule_info = None
@@ -666,7 +666,7 @@ class Scheduler(QObject):
             try:
                 ids = list(db.tags_older_than(_('News'),
                     delta, must_have_authors=['calibre']))
-            except:
+            except Exception:
                 # Happens if library is being switched
                 ids = []
             if ids:
diff --git a/src/calibre/gui2/dialogs/smartdevice.py b/src/calibre/gui2/dialogs/smartdevice.py
index b539473a5d..23d1217ccb 100644
--- a/src/calibre/gui2/dialogs/smartdevice.py
+++ b/src/calibre/gui2/dialogs/smartdevice.py
@@ -113,7 +113,7 @@ class SmartdeviceDialog(QDialog, Ui_Dialog):
             return
         try:
             port = int(port)
-        except:
+        except Exception:
             error_dialog(self, _('Invalid port number'),
                 _('The port must be a number between 8000 and 65535.'), show=True)
             return
diff --git a/src/calibre/gui2/dialogs/template_dialog.py b/src/calibre/gui2/dialogs/template_dialog.py
index 4e3f0a37b6..f57320bdbd 100644
--- a/src/calibre/gui2/dialogs/template_dialog.py
+++ b/src/calibre/gui2/dialogs/template_dialog.py
@@ -596,7 +596,7 @@ class TemplateDialog(QDialog, Ui_TemplateDialog):
         self.table_column_widths = None
         try:
             self.table_column_widths = gprefs.get(self.geometry_string('template_editor_table_widths'), None)
-        except:
+        except Exception:
             pass
         self.set_mi(mi, fm)
 
@@ -639,7 +639,7 @@ class TemplateDialog(QDialog, Ui_TemplateDialog):
         try:
             with open(P('template-functions.json'), 'rb') as f:
                 self.builtin_source_dict = json.load(f, encoding='utf-8')
-        except:
+        except Exception:
             self.builtin_source_dict = {}
 
         self.function_names = func_names = sorted(self.all_functions)
@@ -997,11 +997,11 @@ def evaluate(book, context):
                                 os.makedirs(d)
                             with open(os.path.join(d, icon_name), 'wb') as f:
                                 f.write(pixmap_to_data(p, format='PNG'))
-                    except:
+                    except Exception:
                         traceback.print_exc()
                 self.icon_files.setCurrentIndex(self.icon_files.findText(icon_name))
                 self.icon_files.adjustSize()
-        except:
+        except Exception:
             traceback.print_exc()
 
     def update_filename_box(self):
@@ -1230,7 +1230,7 @@ class BreakReporterBase(QDialog):
             self.table_column_widths = \
                         gprefs.get('template_editor_break_table_widths', None)
             t.setColumnWidth(0, self.table_column_widths[0])
-        except:
+        except Exception:
             t.setColumnWidth(0, t.fontMetrics().averageCharWidth() * 20)
         t.horizontalHeader().sectionResized.connect(self.table_column_resized)
         t.horizontalHeader().setStretchLastSection(True)
diff --git a/src/calibre/gui2/dnd.py b/src/calibre/gui2/dnd.py
index c203d30962..91998c2ae6 100644
--- a/src/calibre/gui2/dnd.py
+++ b/src/calibre/gui2/dnd.py
@@ -141,7 +141,7 @@ def data_as_string(f, md):
     if '/x-moz' in f:
         try:
             raw = raw.decode('utf-16')
-        except:
+        except Exception:
             pass
     return raw
 
@@ -351,7 +351,7 @@ def get_firefox_rurl(md, exts):
             url, fname = _get_firefox_pair(md, exts,
                     'application/x-moz-file-promise-url',
                     'application/x-moz-file-promise-dest-filename')
-        except:
+        except Exception:
             if DEBUG:
                 import traceback
                 traceback.print_exc()
@@ -360,7 +360,7 @@ def get_firefox_rurl(md, exts):
         try:
             url, fname = _get_firefox_pair(md, exts,
                     'text/x-moz-url-data', 'text/x-moz-url-desc')
-        except:
+        except Exception:
             if DEBUG:
                 import traceback
                 traceback.print_exc()
@@ -375,7 +375,7 @@ def get_firefox_rurl(md, exts):
                 ext = posixpath.splitext(fname)[1][1:].lower()
                 if ext not in exts:
                     fname = url = None
-        except:
+        except Exception:
             if DEBUG:
                 import traceback
                 traceback.print_exc()
diff --git a/src/calibre/gui2/ebook_download.py b/src/calibre/gui2/ebook_download.py
index ac627556e4..d0288d04e3 100644
--- a/src/calibre/gui2/ebook_download.py
+++ b/src/calibre/gui2/ebook_download.py
@@ -89,7 +89,7 @@ class EbookDownload:
             try:
                 if dfilename:
                     os.remove(dfilename)
-            except:
+            except Exception:
                 pass
 
     def _download(self, cookie_file, url, filename, save_loc, add_to_lib, create_browser):
diff --git a/src/calibre/gui2/email.py b/src/calibre/gui2/email.py
index 587ddad357..6ba00766e9 100644
--- a/src/calibre/gui2/email.py
+++ b/src/calibre/gui2/email.py
@@ -511,7 +511,7 @@ class EmailMixin:  # {{{
                 self.library_view.model().delete_books_by_id(remove)
                 self.iactions['Remove Books'].library_ids_deleted2(remove,
                                                             next_id=next_id)
-            except:
+            except Exception:
                 import traceback
 
                 # Probably the user deleted the files, in any case, failing
diff --git a/src/calibre/gui2/font_family_chooser.py b/src/calibre/gui2/font_family_chooser.py
index 2a824dd6a1..65e47c3409 100644
--- a/src/calibre/gui2/font_family_chooser.py
+++ b/src/calibre/gui2/font_family_chooser.py
@@ -113,7 +113,7 @@ class FontFamilyDelegate(QStyledItemDelegate):
     def sizeHint(self, option, index):
         try:
             return self.do_size_hint(option, index)
-        except:
+        except Exception:
             return QSize(300, 50)
 
     def do_size_hint(self, option, index):
@@ -128,7 +128,7 @@ class FontFamilyDelegate(QStyledItemDelegate):
         painter.save()
         try:
             self.do_paint(painter, option, index)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         painter.restore()
@@ -308,7 +308,7 @@ class FontFamilyDialog(QDialog):
     def build_font_list(self):
         try:
             self.families = list(self.font_scanner.find_font_families())
-        except:
+        except Exception:
             self.families = []
             print('WARNING: Could not load fonts')
             import traceback
diff --git a/src/calibre/gui2/init.py b/src/calibre/gui2/init.py
index 3f98c63a6b..82d373c47b 100644
--- a/src/calibre/gui2/init.py
+++ b/src/calibre/gui2/init.py
@@ -205,7 +205,7 @@ class StatusBar(QStatusBar):  # {{{
     def set_label(self):
         try:
             self._set_label()
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
 
diff --git a/src/calibre/gui2/jobs.py b/src/calibre/gui2/jobs.py
index 1bca58d9a1..6af8feebe1 100644
--- a/src/calibre/gui2/jobs.py
+++ b/src/calibre/gui2/jobs.py
@@ -166,7 +166,7 @@ class JobManager(QAbstractTableModel, AdaptSQP):  # {{{
                 if job.killed or job.failed:
                     return self.error_icon
                 return self.done_icon
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         return None
@@ -229,7 +229,7 @@ class JobManager(QAbstractTableModel, AdaptSQP):  # {{{
         # Kill parallel jobs that have gone on too long
         try:
             wmax_time = gprefs['worker_max_time'] * 60
-        except:
+        except Exception:
             wmax_time = 0
 
         if wmax_time > 0:
@@ -398,7 +398,7 @@ class FilterModel(QSortFilterProxyModel):  # {{{
         m = self.sourceModel()
         try:
             job = m.row_to_job(source_row)
-        except:
+        except Exception:
             return False
         return not getattr(job, 'hidden_in_gui', False)
 
diff --git a/src/calibre/gui2/keyboard.py b/src/calibre/gui2/keyboard.py
index 1c7ebd3f57..c7f8c97777 100644
--- a/src/calibre/gui2/keyboard.py
+++ b/src/calibre/gui2/keyboard.py
@@ -257,7 +257,7 @@ class ConfigModel(SearchQueryParser, QAbstractItemModel):
             ip = self.data
         try:
             return self.createIndex(row, column, ip[row])
-        except:
+        except Exception:
             pass
         return ROOT
 
@@ -350,7 +350,7 @@ class ConfigModel(SearchQueryParser, QAbstractItemModel):
             else:
                 try:
                     sc = self.data[c].children[p].data
-                except:
+                except Exception:
                     continue
                 if query in lower(sc['name']):
                     ans.add((c, p))
diff --git a/src/calibre/gui2/library/alternate_views.py b/src/calibre/gui2/library/alternate_views.py
index ea294b7583..f1403e764a 100644
--- a/src/calibre/gui2/library/alternate_views.py
+++ b/src/calibre/gui2/library/alternate_views.py
@@ -210,7 +210,7 @@ def drag_data(self):
     def path_for_id(i):
         try:
             ans = db.format_path(i, fmt, index_is_id=True)
-        except:
+        except Exception:
             ans = None
         if ans is None:
             fmts = db.formats(i, index_is_id=True)
@@ -221,7 +221,7 @@ def drag_data(self):
             for f in fmts:
                 try:
                     ans = db.format_path(i, f, index_is_id=True)
-                except:
+                except Exception:
                     ans = None
         if ans is None:
             ans = db.abspath(i, index_is_id=True)
diff --git a/src/calibre/gui2/library/models.py b/src/calibre/gui2/library/models.py
index a0cfb8d06f..7d51ee8247 100644
--- a/src/calibre/gui2/library/models.py
+++ b/src/calibre/gui2/library/models.py
@@ -91,7 +91,7 @@ class ColumnColor:  # {{{
             if color.isValid():
                 self.mi = None
                 return color
-        except:
+        except Exception:
             pass
 # }}}
 
@@ -178,7 +178,7 @@ class ColumnIcon:  # {{{
                 icon_bitmap_cache[icon_string] = result
                 self.mi = None
                 return result
-        except:
+        except Exception:
             pass
 # }}}
 
@@ -496,7 +496,7 @@ class BooksModel(QAbstractTableModel):  # {{{
             return None
         try:
             return self.ids_to_highlight[self.current_highlighted_idx]
-        except:
+        except Exception:
             return None
 
     def get_next_highlighted_id(self, current_row, forward):
@@ -516,7 +516,7 @@ class BooksModel(QAbstractTableModel):  # {{{
                 break
         try:
             self.current_highlighted_idx = self.ids_to_highlight.index(self.id(row_))
-        except:
+        except Exception:
             # This shouldn't happen ...
             return None
         return self.get_current_highlighted_id()
@@ -636,7 +636,7 @@ class BooksModel(QAbstractTableModel):  # {{{
         mi.row_number = idx
         try:
             mi.marked = self.db.data.get_marked(idx, index_is_id=False)
-        except:
+        except Exception:
             mi.marked = None
         return mi
 
@@ -755,7 +755,7 @@ class BooksModel(QAbstractTableModel):  # {{{
                             _set_metadata(pt, newmi, format)
                         else:
                             _set_metadata(pt, mi, format)
-                    except:
+                    except Exception:
                         traceback.print_exc()
                 pt.close()
 
@@ -1081,7 +1081,7 @@ class BooksModel(QAbstractTableModel):  # {{{
                         if color.isValid():
                             self.column_color.mi = None
                             return (color)
-                    except:
+                    except Exception:
                         pass
 
             if self.color_row_fmt_cache is None:
@@ -1284,7 +1284,7 @@ class BooksModel(QAbstractTableModel):  # {{{
                 error_dialog(get_gui(), _('Failed to set data'),
                         _('Could not set data, click "Show details" to see why.'),
                         det_msg=traceback.format_exc(), show=True)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
                 error_dialog(get_gui(), _('Failed to set data'),
@@ -1513,7 +1513,7 @@ class DeviceBooksModel(BooksModel):  # {{{
         idx = None
         try:
             idx = self.db.index(item)
-        except:
+        except Exception:
             path = getattr(item, 'path', None)
             if path:
                 for i, x in enumerate(self.db):
@@ -1622,14 +1622,14 @@ class DeviceBooksModel(BooksModel):  # {{{
                 ax = self.db[x].author_sort
                 if not ax:
                     raise Exception('')
-            except:
+            except Exception:
                 try:
                     ax = authors_to_string(self.db[x].authors)
-                except:
+                except Exception:
                     ax = ''
             try:
                 return sort_key(ax)
-            except:
+            except Exception:
                 return ax
 
         keygen = {
diff --git a/src/calibre/gui2/library/views.py b/src/calibre/gui2/library/views.py
index 1c04e6158d..5c97651736 100644
--- a/src/calibre/gui2/library/views.py
+++ b/src/calibre/gui2/library/views.py
@@ -191,7 +191,7 @@ class PreserveViewState:  # {{{
             self.hscroll = view.horizontalScrollBar().value()
             ci = self.view.currentIndex()
             self.row, self.col = ci.row(), ci.column()
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
 
@@ -501,7 +501,7 @@ class BooksView(TableView):  # {{{
             return
         try:
             idx = self.column_map.index(column)
-        except:
+        except Exception:
             return
         h = view.column_header
 
@@ -993,7 +993,7 @@ class BooksView(TableView):  # {{{
                     ans = gprefs.get(name, None)
                     try:
                         del gprefs[name]
-                    except:
+                    except Exception:
                         pass
                     if ans is not None:
                         db.new_api.set_pref(name, ans)
@@ -1023,7 +1023,7 @@ class BooksView(TableView):  # {{{
                     if not isinstance(d, bool):
                         d = True if d == 0 else False
                     sh.append((c, d))
-            except:
+            except Exception:
                 # Ignore invalid tweak values as users seem to often get them
                 # wrong
                 print('Ignoring invalid sort_columns_at_startup tweak, with error:')
@@ -1473,7 +1473,7 @@ class BooksView(TableView):  # {{{
     def current_id(self):
         try:
             return self.model().id(self.currentIndex())
-        except:
+        except Exception:
             pass
         return None
 
@@ -1513,7 +1513,7 @@ class BooksView(TableView):  # {{{
                 continue
             try:
                 return self.model().id(self.model().index(i, column))
-            except:
+            except Exception:
                 pass
 
         # No unselected rows after the current row, look before
@@ -1522,7 +1522,7 @@ class BooksView(TableView):  # {{{
                 continue
             try:
                 return self.model().id(self.model().index(i, column))
-            except:
+            except Exception:
                 pass
         return None
 
diff --git a/src/calibre/gui2/linux_file_dialogs.py b/src/calibre/gui2/linux_file_dialogs.py
index 42b8d36092..c9f018d2a5 100644
--- a/src/calibre/gui2/linux_file_dialogs.py
+++ b/src/calibre/gui2/linux_file_dialogs.py
@@ -330,7 +330,7 @@ def linux_native_dialog(name):
             def r():
                 try:
                     ret[0] = func(window, *args, **kwargs)
-                except:
+                except Exception:
                     ret[1] = sys.exc_info()
                 while not loop.isRunning():
                     time.sleep(0.001)  # yield so that loop starts
diff --git a/src/calibre/gui2/lrf_renderer/main.py b/src/calibre/gui2/lrf_renderer/main.py
index 1cd3b02e76..8f07883c52 100644
--- a/src/calibre/gui2/lrf_renderer/main.py
+++ b/src/calibre/gui2/lrf_renderer/main.py
@@ -258,7 +258,7 @@ def file_renderer(stream, opts, parent=None, logger=None):
         try:  # Set lrfviewer as the default for LRF files for this user
             from subprocess import call
             call('xdg-mime default calibre-lrfviewer.desktop application/lrf', shell=True)
-        except:
+        except Exception:
             pass
     m = Main(logger, opts, parent=parent)
     m.set_ebook(stream)
diff --git a/src/calibre/gui2/main.py b/src/calibre/gui2/main.py
index 19fab1d55f..5b46572a6e 100644
--- a/src/calibre/gui2/main.py
+++ b/src/calibre/gui2/main.py
@@ -177,7 +177,7 @@ def get_library_path(gui_runner):
     if not os.path.exists(library_path):
         try:
             os.makedirs(library_path)
-        except:
+        except Exception:
             gui_runner.show_error(_('Failed to create library'),
                     _('Failed to create calibre library at: %r.\n'
                       'You will be asked to choose a new library location.')%library_path,
@@ -297,7 +297,7 @@ class GuiRunner(QObject):
             try:
                 self.library_path = candidate
                 db = LibraryDatabase(candidate)
-            except:
+            except Exception:
                 self.show_error(_('Bad database location'), _(
                     'Bad database location %r. calibre will now quit.')%self.library_path,
                     det_msg=traceback.format_exc())
@@ -343,7 +343,7 @@ class GuiRunner(QObject):
                     return
                 if repair_library(self.library_path):
                     db = LibraryDatabase(self.library_path)
-        except:
+        except Exception:
             self.show_error(_('Bad database location'),
                     _('Bad database location %r. Will start with '
                     ' a new, empty calibre library')%self.library_path,
@@ -423,7 +423,7 @@ def run_gui_(opts, args, app, gui_debug=None):
         if iswindows:
             try:
                 runner.main.system_tray_icon.hide()
-            except:
+            except Exception:
                 pass
     if getattr(runner.main, 'gui_debug', None) is not None:
         debugfile = runner.main.gui_debug
diff --git a/src/calibre/gui2/main_window.py b/src/calibre/gui2/main_window.py
index 968ae3f274..5502a442a3 100644
--- a/src/calibre/gui2/main_window.py
+++ b/src/calibre/gui2/main_window.py
@@ -221,7 +221,7 @@ class MainWindow(QMainWindow):
             try:
                 from calibre.debug import print_basic_debug_info
                 print_basic_debug_info(out=sio)
-            except:
+            except Exception:
                 pass
             traceback.print_exception(exc_type, value, tb, file=sio)
             if getattr(value, 'locking_debug_msg', None):
@@ -238,7 +238,7 @@ class MainWindow(QMainWindow):
                     show=True)
         except BaseException:
             pass
-        except:
+        except Exception:
             pass
 
 
diff --git a/src/calibre/gui2/metadata/basic_widgets.py b/src/calibre/gui2/metadata/basic_widgets.py
index 667941cc24..e2ca2dcf23 100644
--- a/src/calibre/gui2/metadata/basic_widgets.py
+++ b/src/calibre/gui2/metadata/basic_widgets.py
@@ -318,7 +318,7 @@ class TitleSortEdit(TitleEdit, ToMetadataMixin, LineEditIndicators):
     def book_lang(self):
         try:
             book_lang = self.languages_edit.lang_codes[0]
-        except:
+        except Exception:
             book_lang = None
         return book_lang
 
@@ -344,15 +344,15 @@ class TitleSortEdit(TitleEdit, ToMetadataMixin, LineEditIndicators):
     def break_cycles(self):
         try:
             self.title_edit.textChanged.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.textChanged.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.autogen_button.clicked.disconnect()
-        except:
+        except Exception:
             pass
 
 # }}}
@@ -470,7 +470,7 @@ class AuthorsEdit(EditWithComplete, ToMetadataMixin):
         self.db = self.dialog = None
         try:
             self.manage_authors_signal.triggered.disconnect()
-        except:
+        except Exception:
             pass
 
 
@@ -600,23 +600,23 @@ class AuthorSortEdit(EnLineEdit, ToMetadataMixin, LineEditIndicators):
         self.db = None
         try:
             self.authors_edit.editTextChanged.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.textChanged.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.autogen_button.clicked.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.copy_a_to_as_action.triggered.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.copy_as_to_a_action.triggered.disconnect()
-        except:
+        except Exception:
             pass
         self.authors_edit = None
 
@@ -763,7 +763,7 @@ class SeriesIndexEdit(make_undoable(QDoubleSpinBox), ToMetadataMixin):
                         ns = self.db.get_next_series_num_for(series)
                     self.current_val = ns
                     self.original_series_name = series
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
 
@@ -773,15 +773,15 @@ class SeriesIndexEdit(make_undoable(QDoubleSpinBox), ToMetadataMixin):
     def break_cycles(self):
         try:
             self.series_edit.currentIndexChanged.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.series_edit.editTextChanged.disconnect()
-        except:
+        except Exception:
             pass
         try:
             self.series_edit.lineEdit().editingFinished.disconnect()
-        except:
+        except Exception:
             pass
         self.db = self.series_edit = self.dialog = None
 
@@ -1158,7 +1158,7 @@ class FormatsManager(QWidget):
                 with stream:
                     mi = get_metadata(stream, ext)
                 return mi, ext
-            except:
+            except Exception:
                 import traceback
                 error_dialog(self, _('Could not read metadata'),
                             _('Could not read metadata from %s format')%ext.upper(),
@@ -1174,7 +1174,7 @@ class FormatsManager(QWidget):
         for name in self.temp_files:
             try:
                 os.remove(name)
-            except:
+            except Exception:
                 pass
         self.temp_files = []
 # }}}
@@ -1424,7 +1424,7 @@ class Cover(ImageView):  # {{{
     def break_cycles(self):
         try:
             self.cover_changed.disconnect()
-        except:
+        except Exception:
             pass
         self.dialog = self._cdata = self.current_val = self.original_val = None
 
diff --git a/src/calibre/gui2/metadata/bulk_download.py b/src/calibre/gui2/metadata/bulk_download.py
index c19173eacd..e34fc97eda 100644
--- a/src/calibre/gui2/metadata/bulk_download.py
+++ b/src/calibre/gui2/metadata/bulk_download.py
@@ -199,14 +199,14 @@ class Notifier(Thread):
         while self.keep_going:
             try:
                 names = os.listdir(self.tdir)
-            except:
+            except Exception:
                 pass
             else:
                 for x in names:
                     if x.endswith('.log'):
                         try:
                             book_id = int(x.partition('.')[0])
-                        except:
+                        except Exception:
                             continue
                         if book_id not in self.seen and book_id in self.title_map:
                             self.seen.add(book_id)
diff --git a/src/calibre/gui2/metadata/diff.py b/src/calibre/gui2/metadata/diff.py
index 92dca33ebd..b4626f5aee 100644
--- a/src/calibre/gui2/metadata/diff.py
+++ b/src/calibre/gui2/metadata/diff.py
@@ -250,7 +250,7 @@ class SeriesEdit(LineEdit):
         val = str(self.text()).strip()
         try:
             series_index = float(val.rpartition('[')[-1].rstrip(']').strip())
-        except:
+        except Exception:
             series_index = 1.0
         series = val.rpartition('[')[0].strip() or val.rpartition('[')[-1].strip() or None
         mi.set(self.field, series)
diff --git a/src/calibre/gui2/metadata/single.py b/src/calibre/gui2/metadata/single.py
index e309d550bf..ad3e568f97 100644
--- a/src/calibre/gui2/metadata/single.py
+++ b/src/calibre/gui2/metadata/single.py
@@ -717,7 +717,7 @@ class MetadataSingleDialogBase(QDialog):
         try:
             self.save_geometry(gprefs, 'metasingle_window_geometry3')
             self.save_widget_settings()
-        except:
+        except Exception:
             # Weird failure, see https://bugs.launchpad.net/bugs/995271
             import traceback
             traceback.print_exc()
@@ -802,7 +802,7 @@ class MetadataSingleDialogBase(QDialog):
         def disconnect(signal):
             try:
                 signal.disconnect()
-            except:
+            except Exception:
                 pass  # Fails if view format was never connected
         disconnect(self.view_format)
         disconnect(self.edit_format)
diff --git a/src/calibre/gui2/metadata/single_download.py b/src/calibre/gui2/metadata/single_download.py
index 1028ce1e08..852a15bd8b 100644
--- a/src/calibre/gui2/metadata/single_download.py
+++ b/src/calibre/gui2/metadata/single_download.py
@@ -171,7 +171,7 @@ class ResultsModel(QAbstractTableModel):  # {{{
         if orientation == Qt.Orientation.Horizontal and role == Qt.ItemDataRole.DisplayRole:
             try:
                 return (self.COLUMNS[section])
-            except:
+            except Exception:
                 return None
         return None
 
@@ -191,7 +191,7 @@ class ResultsModel(QAbstractTableModel):  # {{{
         row, col = index.row(), index.column()
         try:
             book = self.results[row]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DisplayRole and col not in self.ICON_COLS:
             res = self.data_as_text(book, col)
@@ -454,7 +454,7 @@ class IdentifyWorker(Thread):  # {{{
                 result.gui_rank = i
         except WorkerError as e:
             self.error = force_unicode(e.orig_tb)
-        except:
+        except Exception:
             import traceback
             self.error = force_unicode(traceback.format_exc())
 
@@ -601,7 +601,7 @@ class CoverWorker(Thread):  # {{{
                 self.run_fork()
         except WorkerError as e:
             self.error = force_unicode(e.orig_tb)
-        except:
+        except Exception:
             import traceback
             self.error = force_unicode(traceback.format_exc())
 
@@ -635,7 +635,7 @@ class CoverWorker(Thread):  # {{{
                     width, height = int(width), int(height)
                     with open(os.path.join(tdir, x), 'rb') as f:
                         data = f.read()
-                except:
+                except Exception:
                     import traceback
                     traceback.print_exc()
                 else:
@@ -693,7 +693,7 @@ class CoversModel(QAbstractListModel):  # {{{
     def data(self, index, role):
         try:
             text, pmap, cover, waiting = self.covers[index.row()]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DecorationRole:
             return pmap
diff --git a/src/calibre/gui2/preferences/coloring.py b/src/calibre/gui2/preferences/coloring.py
index dbdd772421..f58e0cb66c 100644
--- a/src/calibre/gui2/preferences/coloring.py
+++ b/src/calibre/gui2/preferences/coloring.py
@@ -157,7 +157,7 @@ class ConditionEditor(QWidget):  # {{{
         texts = _('If the ___ column ___ value')
         try:
             one, two, three = texts.split('___')
-        except:
+        except Exception:
             one, two, three = 'If the ', ' column ', ' value '
 
         self.l1 = l1 = QLabel(one)
@@ -663,7 +663,7 @@ class RuleEditor(QDialog):  # {{{
                                 os.makedirs(d)
                             with open(os.path.join(d, icon_name), 'wb') as f:
                                 f.write(pixmap_to_data(p, format='PNG'))
-                    except:
+                    except Exception:
                         import traceback
                         traceback.print_exc()
                     self.update_filename_box()
@@ -674,7 +674,7 @@ class RuleEditor(QDialog):  # {{{
                 else:
                     self.filename_box.setCurrentIndex(self.filename_box.findText(icon_name))
                 self.filename_box.adjustSize()
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
 
@@ -753,7 +753,7 @@ class RuleEditor(QDialog):  # {{{
             self.conditions_widget.layout().addWidget(ce)
             try:
                 ce.condition = c
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
 
@@ -820,7 +820,7 @@ class RulesModel(QAbstractListModel):  # {{{
             return
         try:
             rule = rule_from_template(self.fm, template)
-        except:
+        except Exception:
             rule = template
         return rule
 
@@ -853,7 +853,7 @@ class RulesModel(QAbstractListModel):  # {{{
         row = index.row()
         try:
             kind, col, rule = self.rules[row]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DisplayRole:
             if col == color_row_key:
@@ -1231,7 +1231,7 @@ class EditRules(QWidget):  # {{{
     def edit_rule(self, index):
         try:
             kind, col, rule = self.model.data(index, Qt.ItemDataRole.UserRole)
-        except:
+        except Exception:
             return
         if isinstance(rule, Rule):
             d = RuleEditor(self.model.fm, self.pref_name)
diff --git a/src/calibre/gui2/preferences/columns.py b/src/calibre/gui2/preferences/columns.py
index 6889c15ed4..f7e2e7a830 100644
--- a/src/calibre/gui2/preferences/columns.py
+++ b/src/calibre/gui2/preferences/columns.py
@@ -413,7 +413,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             self.setup_row(row, new_key, self.column_order_val(row))
             self.opt_columns.scrollTo(self.opt_columns.currentIndex())
             self.changed_signal.emit()
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
 
diff --git a/src/calibre/gui2/preferences/create_custom_column.py b/src/calibre/gui2/preferences/create_custom_column.py
index c07354c59a..390ba80e9b 100644
--- a/src/calibre/gui2/preferences/create_custom_column.py
+++ b/src/calibre/gui2/preferences/create_custom_column.py
@@ -613,7 +613,7 @@ class CreateCustomColumn(QDialog):
     def datatype_changed(self, *args):
         try:
             col_type = self.column_types[self.column_type_box.currentIndex()]['datatype']
-        except:
+        except Exception:
             col_type = None
         needs_format = col_type in ('datetime', 'int', 'float')
         for x in ('box', 'default_label', 'label'):
@@ -758,7 +758,7 @@ class CreateCustomColumn(QDialog):
                 else:
                     try:
                         tv = parse_date(default_val)
-                    except:
+                    except Exception:
                         tv = UNDEFINED_DATE
                     if tv == UNDEFINED_DATE:
                         return self.simple_error(_('Invalid default value'),
@@ -829,7 +829,7 @@ class CreateCustomColumn(QDialog):
                         msg = _('The default value must be a real number')
                         tv = float(default_val)
                         display_dict['default_value'] = tv
-                except:
+                except Exception:
                     return self.simple_error(_('Invalid default value'), msg)
         elif col_type == 'comments':
             display_dict['heading_position'] = str(self.comments_heading_position.currentData())
@@ -840,7 +840,7 @@ class CreateCustomColumn(QDialog):
             if default_val:
                 try:
                     tv = int((float(default_val) if half_stars else int(default_val)) * 2)
-                except:
+                except Exception:
                     tv = -1
                 if tv < 0 or tv > 10:
                     if half_stars:
diff --git a/src/calibre/gui2/preferences/look_feel_tabs/__init__.py b/src/calibre/gui2/preferences/look_feel_tabs/__init__.py
index 0bc448ee22..5a26182ef8 100644
--- a/src/calibre/gui2/preferences/look_feel_tabs/__init__.py
+++ b/src/calibre/gui2/preferences/look_feel_tabs/__init__.py
@@ -152,13 +152,13 @@ class DisplayedFields(QAbstractListModel):
     def data(self, index, role):
         try:
             field, visible = self.fields[index.row()]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DisplayRole:
             name = field
             try:
                 name = self.db.field_metadata[field]['name']
-            except:
+            except Exception:
                 pass
             if field == 'path':
                 name = _('Folders/path')
@@ -322,6 +322,6 @@ def selected_rows_metadatas():
         for row in rows:
             if row.isValid():
                 rslt.append(db.new_api.get_proxy_metadata(db.data.index_to_id(row.row())))
-    except:
+    except Exception:
         pass
     return rslt
diff --git a/src/calibre/gui2/preferences/look_feel_tabs/tb_icon_rules.py b/src/calibre/gui2/preferences/look_feel_tabs/tb_icon_rules.py
index 0a718f1ec2..40d1b7c105 100644
--- a/src/calibre/gui2/preferences/look_feel_tabs/tb_icon_rules.py
+++ b/src/calibre/gui2/preferences/look_feel_tabs/tb_icon_rules.py
@@ -782,7 +782,7 @@ class TbIconRulesTab(LazyConfigWidgetBase, Ui_Form):
                     path = os.path.join(config_dir, 'tb_icons', icon_file)
                     try:
                         os.remove(path)
-                    except:
+                    except Exception:
                         pass
                 tbvip[cat_item.lookup_name].pop(value_text, None)
                 continue
diff --git a/src/calibre/gui2/preferences/metadata_sources.py b/src/calibre/gui2/preferences/metadata_sources.py
index 65d3683d82..c3c6a94bec 100644
--- a/src/calibre/gui2/preferences/metadata_sources.py
+++ b/src/calibre/gui2/preferences/metadata_sources.py
@@ -68,7 +68,7 @@ class SourcesModel(QAbstractTableModel):  # {{{
     def data(self, index, role):
         try:
             plugin = self.plugins[index.row()]
-        except:
+        except Exception:
             return None
         col = index.column()
 
@@ -96,7 +96,7 @@ class SourcesModel(QAbstractTableModel):  # {{{
     def setData(self, index, val, role):
         try:
             plugin = self.plugins[index.row()]
-        except:
+        except Exception:
             return False
         col = index.column()
         ret = False
@@ -206,7 +206,7 @@ class FieldsModel(QAbstractListModel):  # {{{
     def data(self, index, role):
         try:
             field = self.fields[index.row()]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DisplayRole:
             return self.descs.get(field, field)
@@ -236,7 +236,7 @@ class FieldsModel(QAbstractListModel):  # {{{
     def setData(self, index, val, role):
         try:
             field = self.fields[index.row()]
-        except:
+        except Exception:
             return False
         ret = False
         if role == Qt.ItemDataRole.CheckStateRole:
@@ -378,7 +378,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
     def pc_finished(self):
         try:
             self.pc.finished.disconnect()
-        except:
+        except Exception:
             pass
         self.stack.setCurrentIndex(0)
         self.stack.removeWidget(self.pc)
diff --git a/src/calibre/gui2/preferences/plugins.py b/src/calibre/gui2/preferences/plugins.py
index 26bd9a4957..6b6a50f458 100644
--- a/src/calibre/gui2/preferences/plugins.py
+++ b/src/calibre/gui2/preferences/plugins.py
@@ -84,7 +84,7 @@ class PluginModel(QAbstractItemModel, AdaptSQP):  # {{{
             else:
                 try:
                     plugin = self._data[self.categories[c]][p]
-                except:
+                except Exception:
                     continue
             if query in lower(plugin.name) or query in lower(plugin.author) or \
                     query in lower(plugin.description):
@@ -428,7 +428,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         all_locations = OrderedDict(ConfigWidget.LOCATIONS)
         try:
             plugin_action = plugin.load_actual_plugin(self.gui)
-        except:
+        except Exception:
             # Broken plugin, fails to initialize. Given that, it's probably
             # already configured, so we can just quit.
             return
diff --git a/src/calibre/gui2/preferences/template_functions.py b/src/calibre/gui2/preferences/template_functions.py
index 15c03e71c6..c402b4d381 100644
--- a/src/calibre/gui2/preferences/template_functions.py
+++ b/src/calibre/gui2/preferences/template_functions.py
@@ -155,7 +155,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
         try:
             self.builtin_source_dict = json.loads(P('template-functions.json', data=True,
                 allow_user_override=False).decode('utf-8'))
-        except:
+        except Exception:
             traceback.print_exc()
             self.builtin_source_dict = {}
 
@@ -169,7 +169,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             for v in self.db.prefs.get('user_template_functions', []):
                 if function_object_type(v) is not StoredObjectType.PythonFunction:
                     self.st_funcs.update({function_pref_name(v):compile_user_function(*v)})
-        except:
+        except Exception:
             if question_dialog(self, _('Template functions'),
                     _('The template functions saved in the library are corrupt. '
                       "Do you want to delete them? Answering 'Yes' will delete all "
@@ -339,7 +339,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
             prog = str(self.program.toPlainText())
             compile_user_function(name, str(self.documentation.toPlainText()),
                                         self.argument_count.value(), prog)
-        except:
+        except Exception:
             error_dialog(self.gui, _('Template functions'),
                          _('Exception while compiling function'), show=True,
                          det_msg=traceback.format_exc())
@@ -358,7 +358,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
                                         self.argument_count.value(), prog)
             self.funcs[name] = cls
             self.build_function_names_box(scroll_to=name)
-        except:
+        except Exception:
             error_dialog(self.gui, _('Template functions'),
                          _('Exception while compiling function'), show=True,
                          det_msg=traceback.format_exc())
@@ -540,7 +540,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
                                         0, prog)
             self.st_funcs[name] = cls
             self.st_build_function_names_box(scroll_to=name)
-        except:
+        except Exception:
             error_dialog(self.gui, _('Stored templates'),
                          _('Exception while storing template'), show=True,
                          det_msg=traceback.format_exc())
diff --git a/src/calibre/gui2/preferences/toolbar.py b/src/calibre/gui2/preferences/toolbar.py
index 97ff2dee9f..aa677ad2cd 100644
--- a/src/calibre/gui2/preferences/toolbar.py
+++ b/src/calibre/gui2/preferences/toolbar.py
@@ -53,7 +53,7 @@ class BaseModel(QAbstractListModel):
                     dont_add_to=frozenset(['menubar', 'menubar-device']))
         try:
             return gui.iactions[name]
-        except:
+        except Exception:
             return None
 
     def rowCount(self, parent):
diff --git a/src/calibre/gui2/preferences/tweaks.py b/src/calibre/gui2/preferences/tweaks.py
index 269b2cb2ee..a959d48a08 100644
--- a/src/calibre/gui2/preferences/tweaks.py
+++ b/src/calibre/gui2/preferences/tweaks.py
@@ -152,7 +152,7 @@ class Tweaks(QAbstractListModel, AdaptSQP):  # {{{
         row = index.row()
         try:
             tweak = self.tweaks[row]
-        except:
+        except Exception:
             return None
         if role == Qt.ItemDataRole.DisplayRole:
             return tweak.name
@@ -175,7 +175,7 @@ class Tweaks(QAbstractListModel, AdaptSQP):  # {{{
     def parse_tweaks(self):
         try:
             custom_tweaks = read_custom_tweaks()
-        except:
+        except Exception:
             print('Failed to load custom tweaks file')
             import traceback
             traceback.print_exc()
@@ -494,7 +494,7 @@ class ConfigWidget(ConfigWidgetBase):
             g, l = {}, {}
             try:
                 exec(str(d.edit.toPlainText()), g, l)
-            except:
+            except Exception:
                 import traceback
                 return error_dialog(self, _('Failed'),
                     _('There was a syntax error in your tweak. Click '
@@ -538,7 +538,7 @@ class ConfigWidget(ConfigWidgetBase):
             l, g = {}, {}
             try:
                 exec(str(self.edit_tweak.toPlainText()), g, l)
-            except:
+            except Exception:
                 import traceback
                 error_dialog(self.gui, _('Failed'),
                         _('There was a syntax error in your tweak. Click '
@@ -554,7 +554,7 @@ class ConfigWidget(ConfigWidgetBase):
             raw = raw.encode('utf-8')
         try:
             custom_tweaks = exec_tweaks(raw)
-        except:
+        except Exception:
             import traceback
             error_dialog(self, _('Invalid tweaks'),
                     _('The tweaks you entered are invalid, try resetting the'
diff --git a/src/calibre/gui2/search_box.py b/src/calibre/gui2/search_box.py
index b4c5e9d1b9..9b7fbd7e4c 100644
--- a/src/calibre/gui2/search_box.py
+++ b/src/calibre/gui2/search_box.py
@@ -185,7 +185,7 @@ class SearchBox2(QComboBox):  # {{{
     def hide_completer_popup(self):
         try:
             self.lineEdit().completer().popup().setVisible(False)
-        except:
+        except Exception:
             pass
 
     def normalize_state(self):
@@ -537,7 +537,7 @@ class SavedSearchBoxMixin:  # {{{
             if not current_search:
                 raise ValueError()
             self.search.set_search_string(current_search)
-        except:
+        except Exception:
             from calibre.gui2.ui import get_gui
             get_gui().status_bar.show_message(_('Current search is not a saved search'), 3000)
     # }}}
diff --git a/src/calibre/gui2/store/config/chooser/models.py b/src/calibre/gui2/store/config/chooser/models.py
index 11e23f0048..b9341f3cd4 100644
--- a/src/calibre/gui2/store/config/chooser/models.py
+++ b/src/calibre/gui2/store/config/chooser/models.py
@@ -67,7 +67,7 @@ class Matches(QAbstractItemModel):
         else:
             try:
                 self.matches = list(self.search_filter.parse(self.filter))
-            except:
+            except Exception:
                 self.matches = self.all_matches
         self.layoutChanged.emit()
         self.sort(self.sort_col, self.sort_order)
diff --git a/src/calibre/gui2/store/loader.py b/src/calibre/gui2/store/loader.py
index 152a14d68f..0ddf1dac78 100644
--- a/src/calibre/gui2/store/loader.py
+++ b/src/calibre/gui2/store/loader.py
@@ -94,7 +94,7 @@ class Stores(OrderedDict):
             except VersionMismatch as e:
                 self.cached_version_map[name] = e.ver
                 continue
-            except:
+            except Exception:
                 import traceback
                 prints('Failed to load cached store:', name)
                 traceback.print_exc()
@@ -128,7 +128,7 @@ class Stores(OrderedDict):
             for name, ver in iteritems(self.version_map)}
         try:
             updates = download_updates(ver_map)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         else:
@@ -150,7 +150,7 @@ class Stores(OrderedDict):
                 self.cached_version_map[name] = e.ver
                 replacements[name] = src
                 continue
-            except:
+            except Exception:
                 import traceback
                 prints('Failed to load downloaded store:', name)
                 traceback.print_exc()
diff --git a/src/calibre/gui2/store/search/download_thread.py b/src/calibre/gui2/store/search/download_thread.py
index d34d889459..297372c9c5 100644
--- a/src/calibre/gui2/store/search/download_thread.py
+++ b/src/calibre/gui2/store/search/download_thread.py
@@ -123,7 +123,7 @@ class SearchThread(Thread):
                     res.create_browser = store_plugin.create_browser
                     self.results.put((res, store_plugin))
                 self.tasks.task_done()
-            except:
+            except Exception:
                 if DEBUG:
                     traceback.print_exc()
 
@@ -169,7 +169,7 @@ class CoverThread(Thread):
                     result.cover_data = scale_image(result.cover_data, 256, 256)[2]
                     callback()
                 self.tasks.task_done()
-            except:
+            except Exception:
                 if DEBUG:
                     traceback.print_exc()
 
@@ -204,7 +204,7 @@ class DetailsThread(Thread):
                     store_plugin.get_details(result, timeout)
                     callback(result)
                 self.tasks.task_done()
-            except:
+            except Exception:
                 if DEBUG:
                     traceback.print_exc()
 
@@ -235,6 +235,6 @@ class CacheUpdateThread(Thread):
             try:
                 store_plugin, timeout = self.tasks.get()
                 store_plugin.update_cache(timeout=timeout, suppress_progress=True)
-            except:
+            except Exception:
                 if DEBUG:
                     traceback.print_exc()
diff --git a/src/calibre/gui2/store/search/models.py b/src/calibre/gui2/store/search/models.py
index 416c003769..f7e75ed583 100644
--- a/src/calibre/gui2/store/search/models.py
+++ b/src/calibre/gui2/store/search/models.py
@@ -303,7 +303,7 @@ class Matches(QAbstractItemModel):
         def keygen(x):
             try:
                 return self.all_matches.index(x)
-            except:
+            except Exception:
                 return 100000
         self.matches = sorted(self.matches, key=keygen)
 
diff --git a/src/calibre/gui2/store/stores/amazon_es_plugin.py b/src/calibre/gui2/store/stores/amazon_es_plugin.py
index 607d5723d3..92f7cbdc8d 100644
--- a/src/calibre/gui2/store/stores/amazon_es_plugin.py
+++ b/src/calibre/gui2/store/stores/amazon_es_plugin.py
@@ -101,7 +101,7 @@ def search_amazon(query, max_results=10, timeout=60,
             author = ''.join(data.xpath(author_xpath))
             try:
                 author = author.split('by ', 1)[1].split(' (')[0]
-            except:
+            except Exception:
                 pass
 
             price = ''.join(data.xpath(price_xpath))
diff --git a/src/calibre/gui2/store/stores/amazon_it_plugin.py b/src/calibre/gui2/store/stores/amazon_it_plugin.py
index 895c825d81..ce1b1092d2 100644
--- a/src/calibre/gui2/store/stores/amazon_it_plugin.py
+++ b/src/calibre/gui2/store/stores/amazon_it_plugin.py
@@ -101,7 +101,7 @@ def search_amazon(query, max_results=10, timeout=60,
             author = ''.join(data.xpath(author_xpath))
             try:
                 author = author.split('by ', 1)[1].split(' (')[0]
-            except:
+            except Exception:
                 pass
 
             price = ''.join(data.xpath(price_xpath))
diff --git a/src/calibre/gui2/store/stores/litres_plugin.py b/src/calibre/gui2/store/stores/litres_plugin.py
index c98c11b108..a15e26be79 100644
--- a/src/calibre/gui2/store/stores/litres_plugin.py
+++ b/src/calibre/gui2/store/stores/litres_plugin.py
@@ -115,7 +115,7 @@ def format_price_in_RUR(price):
         try:
             price = u'{:,.2F} \u20bd'.format(float(price))  # \u20bd => руб.
             price = price.replace(',', ' ').replace('.', ',', 1)
-        except:
+        except Exception:
             pass
     return price
 
diff --git a/src/calibre/gui2/store/stores/mobileread/cache_update_thread.py b/src/calibre/gui2/store/stores/mobileread/cache_update_thread.py
index e696e9da85..f8bce52433 100644
--- a/src/calibre/gui2/store/stores/mobileread/cache_update_thread.py
+++ b/src/calibre/gui2/store/stores/mobileread/cache_update_thread.py
@@ -51,7 +51,7 @@ class CacheUpdateThread(Thread, QObject):
         try:
             with closing(br.open(url, timeout=self.timeout)) as f:
                 raw_data = f.read()
-        except:
+        except Exception:
             return
 
         if not raw_data or not self._run:
@@ -86,7 +86,7 @@ class CacheUpdateThread(Thread, QObject):
                     break
                 else:
                     self.update_progress.emit(i)
-        except:
+        except Exception:
             pass
 
         # Save the book list and it's create time.
diff --git a/src/calibre/gui2/store/stores/mobileread/models.py b/src/calibre/gui2/store/stores/mobileread/models.py
index 94f1af96df..ff6fe1be96 100644
--- a/src/calibre/gui2/store/stores/mobileread/models.py
+++ b/src/calibre/gui2/store/stores/mobileread/models.py
@@ -44,7 +44,7 @@ class BooksModel(QAbstractItemModel):
         else:
             try:
                 self.books = list(self.search_filter.parse(self.filter))
-            except:
+            except Exception:
                 self.books = self.all_books
         self.layoutChanged.emit()
         self.sort(self.sort_col, self.sort_order)
diff --git a/src/calibre/gui2/tag_browser/model.py b/src/calibre/gui2/tag_browser/model.py
index 93a0e9c49d..f5c04d383f 100644
--- a/src/calibre/gui2/tag_browser/model.py
+++ b/src/calibre/gui2/tag_browser/model.py
@@ -472,7 +472,7 @@ class TagsModel(QAbstractItemModel):  # {{{
             path = os.path.join(self.icon_config_dir, file_name)
             try:
                 os.remove(path)
-            except:
+            except Exception:
                 pass
 
     def remove_value_icon(self, key, value, file_name):
@@ -1460,7 +1460,7 @@ class TagsModel(QAbstractItemModel):  # {{{
                     order = tweaks.get('tag_browser_category_order', {'*':1})
                     if not isinstance(order, dict):
                         raise TypeError()
-                except:
+                except Exception:
                     print('Tweak tag_browser_category_order is not valid. Ignored')
                     order = {'*': 1000}
                 defvalue = order.get('*', 1000)
diff --git a/src/calibre/gui2/tag_browser/view.py b/src/calibre/gui2/tag_browser/view.py
index d35540af51..8b0eabee06 100644
--- a/src/calibre/gui2/tag_browser/view.py
+++ b/src/calibre/gui2/tag_browser/view.py
@@ -370,7 +370,7 @@ class TagsView(QTreeView):  # {{{
             try:
                 from calibre.gui2.ui import get_gui
                 get_gui().shift_esc()
-            except:
+            except Exception:
                 traceback.print_exc()
 
     @property
@@ -521,7 +521,7 @@ class TagsView(QTreeView):  # {{{
             for i, ac in enumerate(self.alter_tb.match_menu.actions()):
                 if ac is action:
                     config.set('match_tags_type', self.db.MATCH_TYPE[i])
-        except:
+        except Exception:
             pass
 
     def mousePressEvent(self, event):
@@ -732,7 +732,7 @@ class TagsView(QTreeView):  # {{{
                             os.makedirs(d)
                         with open(os.path.join(d, icon_file_name), 'wb') as f:
                             f.write(pixmap_to_data(p, format='PNG'))
-                    except:
+                    except Exception:
                         traceback.print_exc()
                         return
                 else:
diff --git a/src/calibre/gui2/threaded_jobs.py b/src/calibre/gui2/threaded_jobs.py
index a8c4d1970c..e9ce2b2585 100644
--- a/src/calibre/gui2/threaded_jobs.py
+++ b/src/calibre/gui2/threaded_jobs.py
@@ -92,7 +92,7 @@ class ThreadedJob(BaseJob):
         self.duration = time.time() - self.start_time
         try:
             self.callback(self)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         self._cleanup()
@@ -101,7 +101,7 @@ class ThreadedJob(BaseJob):
 
         try:
             self.consolidate_log()
-        except:
+        except Exception:
             if self.log is not None:
                 self.log.exception('Log consolidation failed')
 
@@ -165,7 +165,7 @@ class ThreadedJobWorker(Thread):
     def run(self):
         try:
             self.job.start_work()
-        except:
+        except Exception:
             import traceback
 
             from calibre import prints
@@ -199,7 +199,7 @@ class ThreadedJobServer(Thread):
         while self.keep_going:
             try:
                 self.run_once()
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
             time.sleep(0.1)
diff --git a/src/calibre/gui2/toc/main.py b/src/calibre/gui2/toc/main.py
index eedc161ddf..ca002b8887 100644
--- a/src/calibre/gui2/toc/main.py
+++ b/src/calibre/gui2/toc/main.py
@@ -1309,7 +1309,7 @@ class TOCEditor(QDialog):  # {{{
             commit_toc(self.ebook, toc, lang=self.toc_view.toc_lang,
                     uid=self.toc_view.toc_uid)
             self.ebook.commit()
-        except:
+        except Exception:
             import traceback
             tb = traceback.format_exc()
         self.writing_done.emit(tb)
diff --git a/src/calibre/gui2/tools.py b/src/calibre/gui2/tools.py
index ca6b2f31f9..743d78857a 100644
--- a/src/calibre/gui2/tools.py
+++ b/src/calibre/gui2/tools.py
@@ -73,7 +73,7 @@ def convert_single_ebook(parent, db, book_ids, auto_conversion=False,  # {{{
 
                 try:
                     dtitle = str(mi.title)
-                except:
+                except Exception:
                     dtitle = repr(mi.title)
                 desc = _('Convert book %(num)d of %(total)d (%(title)s)') % \
                         {'num':i + 1, 'total':total, 'title':dtitle}
@@ -234,7 +234,7 @@ class QueueBulk(QProgressDialog):
                     lrecs.remove(x)
             try:
                 dtitle = str(mi.title)
-            except:
+            except Exception:
                 dtitle = repr(mi.title)
             if len(dtitle) > 50:
                 dtitle = dtitle[:50].rpartition(' ')[0]+'...'
@@ -368,7 +368,7 @@ def generate_catalog(parent, dbspec, ids, device_manager, db):  # {{{
             connected_device['serial'] = device.detected_device.serial if \
                                           hasattr(device.detected_device,'serial') else None
             connected_device['save_template'] = device.save_template()
-        except:
+        except Exception:
             pass
 
     # Create a temporary copy of the databases to pass into the generation
diff --git a/src/calibre/gui2/tweak_book/boss.py b/src/calibre/gui2/tweak_book/boss.py
index 637bfa3795..59a55ba72e 100644
--- a/src/calibre/gui2/tweak_book/boss.py
+++ b/src/calibre/gui2/tweak_book/boss.py
@@ -549,7 +549,7 @@ class Boss(QObject):
             spine_index += 1
         try:
             added_name = c.add_file(file_name, adata, spine_index=spine_index)
-        except:
+        except Exception:
             self.rewind_savepoint()
             raise
         self.gui.file_list.build(c)
@@ -589,7 +589,7 @@ class Boss(QObject):
                 try:
                     with open(path, 'rb') as f:
                         c.add_file(name, f.read())
-                except:
+                except Exception:
                     self.rewind_savepoint()
                     raise
                 if name.rpartition('.')[2].lower() in ('ttf', 'otf', 'woff'):
@@ -672,7 +672,7 @@ class Boss(QObject):
             self.add_savepoint(_('Before: %s') % name)
             try:
                 report, changed = tweak_polish(current_container(), {action:True}, customization=customization)
-            except:
+            except Exception:
                 self.rewind_savepoint()
                 raise
             if changed:
@@ -716,7 +716,7 @@ class Boss(QObject):
             self.add_savepoint(_('Before HTML transformation'))
             try:
                 changed = transform_container(current_container(), last_used_html_transform_rules, names)
-            except:
+            except Exception:
                 self.rewind_savepoint()
                 raise
             if changed:
@@ -742,7 +742,7 @@ class Boss(QObject):
             self.add_savepoint(_('Before style transformation'))
             try:
                 changed = transform_container(current_container(), last_used_transform_rules)
-            except:
+            except Exception:
                 self.rewind_savepoint()
                 raise
             if changed:
diff --git a/src/calibre/gui2/tweak_book/completion/worker.py b/src/calibre/gui2/tweak_book/completion/worker.py
index 3d407c86d4..4406132b24 100644
--- a/src/calibre/gui2/tweak_book/completion/worker.py
+++ b/src/calibre/gui2/tweak_book/completion/worker.py
@@ -58,7 +58,7 @@ class CompletionWorker(Thread):
         conn = conn or self.control_conn
         try:
             eintr_retry_call(conn.send, data)
-        except:
+        except Exception:
             if not self.shutting_down:
                 raise
 
@@ -66,7 +66,7 @@ class CompletionWorker(Thread):
         conn = conn or self.control_conn
         try:
             return eintr_retry_call(conn.recv)
-        except:
+        except Exception:
             if not self.shutting_down:
                 raise
 
diff --git a/src/calibre/gui2/tweak_book/diff/main.py b/src/calibre/gui2/tweak_book/diff/main.py
index 5224f99049..9ccd6acee8 100644
--- a/src/calibre/gui2/tweak_book/diff/main.py
+++ b/src/calibre/gui2/tweak_book/diff/main.py
@@ -344,7 +344,7 @@ class Diff(Dialog):
         for x in ('revert_requested', 'line_activated'):
             try:
                 getattr(self, x).disconnect()
-            except:
+            except Exception:
                 pass
 
     def do_search(self, reverse):
@@ -500,7 +500,7 @@ def compare_books(path1, path2, revert_msg=None, revert_callback=None, parent=No
     d.exec()
     try:
         d.revert_requested.disconnect()
-    except:
+    except Exception:
         pass
     d.break_cycles()
 
diff --git a/src/calibre/gui2/tweak_book/diff/view.py b/src/calibre/gui2/tweak_book/diff/view.py
index 59c688a401..43cfb6d316 100644
--- a/src/calibre/gui2/tweak_book/diff/view.py
+++ b/src/calibre/gui2/tweak_book/diff/view.py
@@ -215,7 +215,7 @@ class TextBrowser(PlainTextEdit):  # {{{
             return
         try:
             lnum = int(self.line_number_map.get(block_number, ''))
-        except:
+        except Exception:
             lnum = 1
         for i, (num, text) in enumerate(self.headers):
             if num > block_number:
diff --git a/src/calibre/gui2/tweak_book/editor/insert_resource.py b/src/calibre/gui2/tweak_book/editor/insert_resource.py
index 02a4fcc20c..ba403fc761 100644
--- a/src/calibre/gui2/tweak_book/editor/insert_resource.py
+++ b/src/calibre/gui2/tweak_book/editor/insert_resource.py
@@ -141,7 +141,7 @@ class ImageDelegate(QStyledItemDelegate):
             cover = self.cover_cache[name] = QPixmap()
             try:
                 raw = current_container().raw_data(name, decode=False)
-            except:
+            except Exception:
                 pass
             else:
                 try:
diff --git a/src/calibre/gui2/tweak_book/job.py b/src/calibre/gui2/tweak_book/job.py
index b7c32b0da7..e57c710558 100644
--- a/src/calibre/gui2/tweak_book/job.py
+++ b/src/calibre/gui2/tweak_book/job.py
@@ -31,7 +31,7 @@ class LongJob(Thread):
         st = time.time()
         try:
             self.result = self.function(*self.args, **self.kwargs)
-        except:
+        except Exception:
             import traceback
             self.traceback = traceback.format_exc()
         self.time_taken = time.time() - st
diff --git a/src/calibre/gui2/tweak_book/preview.py b/src/calibre/gui2/tweak_book/preview.py
index b8687b4a9d..d1b06cfb6e 100644
--- a/src/calibre/gui2/tweak_book/preview.py
+++ b/src/calibre/gui2/tweak_book/preview.py
@@ -110,7 +110,7 @@ class ParseWorker(Thread):
             # Connect to the worker and send a dummy job to initialize it
             self.worker = offload_worker(priority='low')
             self.worker(mod, func, '
')
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             self.launch_error = traceback.format_exc()
@@ -133,7 +133,7 @@ class ParseWorker(Thread):
             pi, data = request[1:]
             try:
                 res = self.worker(mod, func, data)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
             else:
diff --git a/src/calibre/gui2/tweak_book/save.py b/src/calibre/gui2/tweak_book/save.py
index 469459983f..1eb62d852f 100644
--- a/src/calibre/gui2/tweak_book/save.py
+++ b/src/calibre/gui2/tweak_book/save.py
@@ -157,7 +157,7 @@ class SaveManager(QObject):
             try:
                 count, tdir, container = x
                 error_occurred = self.process_save(count, tdir, container)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
             finally:
@@ -193,7 +193,7 @@ class SaveManager(QObject):
         error_occurred = False
         try:
             self.do_save(tdir, container)
-        except:
+        except Exception:
             import traceback
             self.report_error.emit(traceback.format_exc())
             error_occurred = True
diff --git a/src/calibre/gui2/tweak_book/spell.py b/src/calibre/gui2/tweak_book/spell.py
index 5273ebc940..10b0b2e105 100644
--- a/src/calibre/gui2/tweak_book/spell.py
+++ b/src/calibre/gui2/tweak_book/spell.py
@@ -222,7 +222,7 @@ class AddDictionary(QDialog):  # {{{
         oxt = str(self.path.text())
         try:
             num = import_from_oxt(oxt, nick)
-        except:
+        except Exception:
             import traceback
             return error_dialog(self, _('Failed to import dictionaries'), _(
                 'Failed to import dictionaries from %s. Click "Show details" for more information') % oxt,
@@ -240,7 +240,7 @@ class AddDictionary(QDialog):  # {{{
                 'A dictionary with the nick name "%s" already exists.') % nick, show=True)
         try:
             num = import_from_online(directory, nick)
-        except:
+        except Exception:
             import traceback
             return error_dialog(self, _('Failed to download dictionaries'), _(
                 'Failed to download dictionaries for "{}". Click "Show details" for more information').format(data['text']),
@@ -1553,7 +1553,7 @@ class SpellCheck(Dialog):
         try:
             words = get_all_words(current_container(), dictionaries.default_locale, excluded_files=self.excluded_files)
             spell_map = {w:dictionaries.recognized(*w) for w in words}
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             words = traceback.format_exc()
diff --git a/src/calibre/gui2/tweak_book/undo.py b/src/calibre/gui2/tweak_book/undo.py
index 5dac2ba431..4a56a5a4a7 100644
--- a/src/calibre/gui2/tweak_book/undo.py
+++ b/src/calibre/gui2/tweak_book/undo.py
@@ -32,7 +32,7 @@ def cleanup(containers):
     for container in containers:
         try:
             shutil.rmtree(container.root, ignore_errors=True)
-        except:
+        except Exception:
             pass
 
 
diff --git a/src/calibre/gui2/ui.py b/src/calibre/gui2/ui.py
index ba5b366302..28fe857a6a 100644
--- a/src/calibre/gui2/ui.py
+++ b/src/calibre/gui2/ui.py
@@ -188,7 +188,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
             try:
                 st = self.init_istore(store)
                 self.add_istore(st)
-            except:
+            except Exception:
                 # Ignore errors in loading user supplied plugins
                 import traceback
                 traceback.print_exc()
@@ -364,7 +364,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
         if not gprefs.get('quick_start_guide_added', False):
             try:
                 add_quick_start_guide(self.library_view)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
         for view in ('library', 'memory', 'card_a', 'card_b'):
@@ -399,7 +399,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
         for ac in self.iactions.values():
             try:
                 ac.gui_layout_complete()
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
                 if ac.installation_type is PluginInstallationType.BUILTIN:
@@ -429,7 +429,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
         for ac in self.iactions.values():
             try:
                 ac.initialization_complete()
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
                 if ac.installation_type is PluginInstallationType.BUILTIN:
@@ -964,7 +964,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
                 olddb = self.library_view.model().db
                 if copy_structure:
                     default_prefs = dict(olddb.prefs)
-            except:
+            except Exception:
                 olddb = None
             if copy_structure and olddb is not None and default_prefs is not None:
                 default_prefs['field_metadata'] = olddb.new_api.field_metadata.all_metadata()
@@ -1164,13 +1164,13 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
                     d.show()
                     self._modeless_dialogs.append(d)
                 return
-        except:
+        except Exception:
             pass
         if job.killed:
             return
         try:
             prints(job.details, file=sys.stderr)
-        except:
+        except Exception:
             pass
         if not minz:
             self.job_error_dialog.show_error(dialog_title,
@@ -1213,7 +1213,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
         self.restart_after_quit = restart
         try:
             self.shutdown()
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         self.debug_on_restart = debug_on_restart
@@ -1270,7 +1270,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
         try:
             db = self.library_view.model().db
             cf = db.clean
-        except:
+        except Exception:
             pass
         else:
             cf()
@@ -1298,7 +1298,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
         def eh(t, v, tb):
             try:
                 traceback.print_exception(t, v, tb, file=sys.stderr)
-            except:
+            except Exception:
                 pass
         sys.excepthook = eh
 
@@ -1347,7 +1347,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
             self.restart_after_quit = True
             try:
                 self.shutdown(write_settings=False)
-            except:
+            except Exception:
                 pass
             QApplication.instance().quit()
 
@@ -1368,7 +1368,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
             if self.confirm_quit():
                 try:
                     self.shutdown(write_settings=False)
-                except:
+                except Exception:
                     import traceback
                     traceback.print_exc()
                 e.accept()
diff --git a/src/calibre/gui2/wizard/__init__.py b/src/calibre/gui2/wizard/__init__.py
index 07f79ddb4e..bad4eb5149 100644
--- a/src/calibre/gui2/wizard/__init__.py
+++ b/src/calibre/gui2/wizard/__init__.py
@@ -612,7 +612,7 @@ class StanzaPage(QWizardPage, StanzaUI):
                     t = re.sub(r':\d+', ':'+str(p), t)
                     self.instructions.setText(t)
                     return p
-                except:
+                except Exception:
                     continue
 
 
@@ -758,7 +758,7 @@ class LibraryPage(QWizardPage, LibraryUI):
             from calibre.customize.ui import enable_plugin
             for name in metadata_plugins:
                 enable_plugin(name)
-        except:
+        except Exception:
             pass
         lp = self.location.text()
         if lp == self.initial_library_location:
@@ -771,7 +771,7 @@ class LibraryPage(QWizardPage, LibraryUI):
         from calibre.db.legacy import LibraryDatabase
         try:
             return LibraryDatabase.exists_at(x) or not os.listdir(x)
-        except:
+        except Exception:
             return False
 
     def validatePage(self):
@@ -794,7 +794,7 @@ class LibraryPage(QWizardPage, LibraryUI):
             if not os.path.exists(x):
                 try:
                     self.makedirs(x)
-                except:
+                except Exception:
                     return error_dialog(self, _('Bad location'),
                             _('Failed to create a folder at %s')%x,
                             det_msg=traceback.format_exc(), show=True)
@@ -808,7 +808,7 @@ class LibraryPage(QWizardPage, LibraryUI):
         if not isinstance(x, str):
             try:
                 x = x.decode(filesystem_encoding)
-            except:
+            except Exception:
                 x = str(repr(x))
         error_dialog(self, _('Bad location'),
             _('You must choose an empty folder for '
@@ -829,7 +829,7 @@ class LibraryPage(QWizardPage, LibraryUI):
             if not os.path.exists(lp):
                 try:
                     self.makedirs(lp)
-                except:
+                except Exception:
                     traceback.print_exc()
                     try:
                         lp = os.path.expanduser('~')
@@ -850,7 +850,7 @@ class LibraryPage(QWizardPage, LibraryUI):
             lp = str(self.location.text())
             ans = bool(lp) and os.path.exists(lp) and os.path.isdir(lp) and os.access(lp,
                     os.W_OK)
-        except:
+        except Exception:
             ans = False
         return ans
 
diff --git a/src/calibre/gui2/wizard/send_email.py b/src/calibre/gui2/wizard/send_email.py
index 81fa130e5a..5f9058f5d7 100644
--- a/src/calibre/gui2/wizard/send_email.py
+++ b/src/calibre/gui2/wizard/send_email.py
@@ -238,7 +238,7 @@ class SendEmail(QWidget, Ui_Form):
                 username=opts.relay_username, debug_output=debug_out,
                 password=from_hex_unicode(opts.relay_password),
                 encryption=opts.encryption, port=opts.relay_port)
-        except:
+        except Exception:
             import traceback
             tb = traceback.format_exc()
             tb += '\n\nLog:\n' + buf.getvalue()
diff --git a/src/calibre/library/caches.py b/src/calibre/library/caches.py
index 3b9405bbc5..7c57b168f9 100644
--- a/src/calibre/library/caches.py
+++ b/src/calibre/library/caches.py
@@ -60,7 +60,7 @@ class MetadataBackup(Thread):  # {{{
                 if id_ is None:
                     continue
                 # print('writer thread', id_, sequence)
-            except:
+            except Exception:
                 # Happens during interpreter shutdown
                 break
             if not self.keep_running:
@@ -68,13 +68,13 @@ class MetadataBackup(Thread):  # {{{
 
             try:
                 path, mi, sequence = self.get_metadata_for_dump(id_)
-            except:
+            except Exception:
                 prints('Failed to get backup metadata for id:', id_, 'once')
                 traceback.print_exc()
                 time.sleep(2)
                 try:
                     path, mi, sequence = self.get_metadata_for_dump(id_)
-                except:
+                except Exception:
                     prints('Failed to get backup metadata for id:', id_, 'again, giving up')
                     traceback.print_exc()
                     continue
@@ -91,7 +91,7 @@ class MetadataBackup(Thread):  # {{{
             time.sleep(0.1)
             try:
                 raw = metadata_to_opf(mi)
-            except:
+            except Exception:
                 prints('Failed to convert to opf for id:', id_)
                 traceback.print_exc()
                 continue
@@ -102,12 +102,12 @@ class MetadataBackup(Thread):  # {{{
             time.sleep(0.1)  # Give the GUI thread a chance to do something
             try:
                 self.do_write(path, raw)
-            except:
+            except Exception:
                 prints('Failed to write backup metadata for id:', id_, 'once')
                 time.sleep(2)
                 try:
                     self.do_write(path, raw)
-                except:
+                except Exception:
                     prints('Failed to write backup metadata for id:', id_,
                             'again, giving up')
                     continue
@@ -152,7 +152,7 @@ def force_to_bool(val):
                 val = False
             else:
                 val = bool(int(val))
-        except:
+        except Exception:
             val = None
     return val
 
@@ -399,13 +399,13 @@ class ResultCache(SearchQueryParser):  # {{{
             num = query[0:-(self.untrans_daysago_len if query.endswith(self.untrans_daysago) else self.local_daysago_len)]
             try:
                 qd = now() - timedelta(int(num))
-            except:
+            except Exception:
                 raise ParseException(_('Number conversion error: {0}').format(num))
             field_count = 3
         else:
             try:
                 qd = parse_date(query, as_utc=False)
-            except:
+            except Exception:
                 raise ParseException(_('Date conversion error: {0}').format(query))
             if '-' in query:
                 field_count = query.count('-') + 1
@@ -494,7 +494,7 @@ class ResultCache(SearchQueryParser):  # {{{
                 mult = 1.0
             try:
                 q = cast(query) * mult
-            except:
+            except Exception:
                 raise ParseException(_('Non-numeric value in query: {0}').format(query))
 
         for id_ in candidates:
@@ -503,7 +503,7 @@ class ResultCache(SearchQueryParser):  # {{{
                 continue
             try:
                 v = cast(val_func(item))
-            except:
+            except Exception:
                 v = None
             if v:
                 v = adjust(v)
@@ -709,7 +709,7 @@ class ResultCache(SearchQueryParser):  # {{{
                             c -= m
                             if len(c) == 0:
                                 break
-                        except:
+                        except Exception:
                             pass
                     return matches
 
@@ -777,7 +777,7 @@ class ResultCache(SearchQueryParser):  # {{{
 
             try:
                 rating_query = int(query) * 2
-            except:
+            except Exception:
                 rating_query = None
 
             location = [location] if location != 'all' else list(db_col.keys())
@@ -836,7 +836,7 @@ class ResultCache(SearchQueryParser):  # {{{
                             if int(query) == item[loc]:
                                 matches.add(item[0])
                             continue
-                    except:
+                    except Exception:
                         # A conversion threw an exception. Because of the type,
                         # no further match is possible
                         continue
@@ -1075,7 +1075,7 @@ class ResultCache(SearchQueryParser):  # {{{
         for id_,val in iteritems(self.marked_ids_dict):
             try:
                 self._data[id_][marked_col] = val
-            except:
+            except Exception:
                 pass
 
         in_tag_browser_col = self.FIELD_MAP['in_tag_browser']
@@ -1188,7 +1188,7 @@ class SortKeyGenerator:
                 if sb == 'date':
                     try:
                         val = parse_date(val)
-                    except:
+                    except Exception:
                         val = UNDEFINED_DATE
                     dt = 'datetime'
                 elif sb == 'number':
@@ -1201,7 +1201,7 @@ class SortKeyGenerator:
                                 val = val[:-len(candidate)].strip()
                                 break
                         val = locale.atof(val) * p
-                    except:
+                    except Exception:
                         val = 0.0
                     dt = 'float'
                 elif sb == 'bool':
diff --git a/src/calibre/library/catalogs/bibtex.py b/src/calibre/library/catalogs/bibtex.py
index 49edd025e7..bec49e87cf 100644
--- a/src/calibre/library/catalogs/bibtex.py
+++ b/src/calibre/library/catalogs/bibtex.py
@@ -190,7 +190,7 @@ class BIBTEX(CatalogPlugin):
                     # html to text
                     try:
                         item = html2text(item)
-                    except:
+                    except Exception:
                         log.warn('Failed to convert comments to text')
                     bibtex_entry.append(f'note = "{bibtexdict.utf8ToBibtex(item)}"')
 
@@ -289,7 +289,7 @@ class BIBTEX(CatalogPlugin):
             bibfile_enc = bibfile_enc[opts.bibfile_enc]
             bibfile_enctag = bibfile_enctag[opts.bibfile_enctag]
             bib_entry = bib_entry[opts.bib_entry]
-        except:
+        except Exception:
             if opts.bibfile_enc in bibfile_enc:
                 bibfile_enc = opts.bibfile_enc
             else:
diff --git a/src/calibre/library/catalogs/epub_mobi.py b/src/calibre/library/catalogs/epub_mobi.py
index 3e56266ac1..d4ae3ace1e 100644
--- a/src/calibre/library/catalogs/epub_mobi.py
+++ b/src/calibre/library/catalogs/epub_mobi.py
@@ -293,7 +293,7 @@ class EPUB_MOBI(CatalogPlugin):
                     for storage in opts.connected_device['storage']:
                         if storage:
                             build_log.append(f'  mount point: {storage}')
-                except:
+                except Exception:
                     build_log.append('  (no mount points)')
         else:
             build_log.append(" connected_device: '{}'".format(opts.connected_device['name']))
@@ -355,7 +355,7 @@ class EPUB_MOBI(CatalogPlugin):
         if type(opts.prefix_rules) is not tuple:
             try:
                 opts.prefix_rules = eval(opts.prefix_rules)
-            except:
+            except Exception:
                 log.error(f'malformed --prefix-rules: {opts.prefix_rules}')
                 raise
             for rule in opts.prefix_rules:
@@ -366,7 +366,7 @@ class EPUB_MOBI(CatalogPlugin):
         if type(opts.exclusion_rules) is not tuple:
             try:
                 opts.exclusion_rules = eval(opts.exclusion_rules)
-            except:
+            except Exception:
                 log.error(f'malformed --exclusion-rules: {opts.exclusion_rules}')
                 raise
             for rule in opts.exclusion_rules:
@@ -405,7 +405,7 @@ class EPUB_MOBI(CatalogPlugin):
                 log.info(f' Completed catalog source generation ({datetime.timedelta(seconds=int(time.time() - opts.start_time))!s})\n')
         except (AuthorSortMismatchException, EmptyCatalogException) as e:
             log.error(f' *** Terminated catalog generation: {e} ***')
-        except:
+        except Exception:
             log.error(' unhandled exception in catalog generator')
             raise
 
@@ -448,7 +448,7 @@ class EPUB_MOBI(CatalogPlugin):
                     cpath = db.cover(matches[0], index_is_id=True, as_path=True)
                     if cpath and os.path.exists(cpath):
                         existing_cover = True
-            except:
+            except Exception:
                 pass
 
             if self.opts.use_existing_cover and not existing_cover:
@@ -476,7 +476,7 @@ class EPUB_MOBI(CatalogPlugin):
 
             try:
                 os.remove(cpath)
-            except:
+            except Exception:
                 pass
 
             if GENERATE_DEBUG_EPUB:
diff --git a/src/calibre/library/catalogs/epub_mobi_builder.py b/src/calibre/library/catalogs/epub_mobi_builder.py
index 124660e9be..90e4e1aa02 100644
--- a/src/calibre/library/catalogs/epub_mobi_builder.py
+++ b/src/calibre/library/catalogs/epub_mobi_builder.py
@@ -441,9 +441,9 @@ class CatalogBuilder:
                     with ZipFile(self.thumbs_path, mode='r') as zfr:
                         try:
                             cached_thumb_width = zfr.read('thumb_width')
-                        except:
+                        except Exception:
                             cached_thumb_width = '-1'
-                except:
+                except Exception:
                     os.remove(self.thumbs_path)
                     cached_thumb_width = '-1'
 
@@ -502,7 +502,7 @@ class CatalogBuilder:
             try:
                 self.generate_masthead_image(os.path.join(self.catalog_path,
                                                 'images/mastheadImage.gif'))
-            except:
+            except Exception:
                 pass
 
     def create_catalog_directory_structure(self):
@@ -635,7 +635,7 @@ class CatalogBuilder:
                             if self.DEBUG:
                                 _log_prefix_rule_match_info(rule, record, field_contents)
                             return rule['prefix']
-                    except:
+                    except Exception:
                         if self.opts.verbose:
                             self.opts.log.error('pattern failed to compile: {}'.format(rule['pattern']))
                 elif field_contents is None and rule['pattern'] == 'None':
@@ -1166,7 +1166,7 @@ class CatalogBuilder:
                         myBookmark = Bookmark(path_map[id], id, book_ext[id], bookmark_ext)
                         try:
                             book['percent_read'] = min(float(100 * myBookmark.last_read / myBookmark.book_length), 100)
-                        except:
+                        except Exception:
                             book['percent_read'] = 0
                         dots = int((book['percent_read'] + 5) // 10)
                         dot_string = self.SYMBOL_PROGRESS_READ * dots
@@ -1271,7 +1271,7 @@ class CatalogBuilder:
                 if re.search(self.opts.exclude_genre, tag):
                     excluded_tags.append(tag)
                     continue
-            except:
+            except Exception:
                 self.opts.log.error(f'\tfilterDbTags(): malformed --exclude-genre regex pattern: {self.opts.exclude_genre}')
 
             if tag == ' ':
@@ -1317,7 +1317,7 @@ class CatalogBuilder:
                     continue
                 else:
                     tag_list.append(tag)
-        except:
+        except Exception:
             self.opts.log.error(f'\tfilter_excluded_genres(): malformed --exclude-genre regex pattern: {regex}')
             return tags
 
@@ -2026,7 +2026,7 @@ class CatalogBuilder:
             book[1]['bookmark_timestamp'] = book[0].timestamp
             try:
                 book[1]['percent_read'] = min(float(100 * book[0].last_read / book[0].book_length), 100)
-            except:
+            except Exception:
                 book[1]['percent_read'] = 0
             bookmarked_books.append(book[1])
 
@@ -2928,7 +2928,7 @@ class CatalogBuilder:
         draw = ImageDraw.Draw(img)
         try:
             font = ImageFont.truetype(font_path, 48)
-        except:
+        except Exception:
             self.opts.log.error(f"     Failed to load user-specifed font '{font_path}'")
             font = ImageFont.truetype(default_font, 48)
         text = self.opts.catalog_title.encode('utf-8')
@@ -3705,7 +3705,7 @@ class CatalogBuilder:
                     star_string = self.SYMBOL_FULL_RATING * stars
                     empty_stars = self.SYMBOL_EMPTY_RATING * (5 - stars)
                     rating = f'{star_string}{empty_stars}'
-        except:
+        except Exception:
             # Rating could be None
             pass
         return rating
@@ -3851,7 +3851,7 @@ class CatalogBuilder:
         def _open_archive(mode='r'):
             try:
                 return ZipFile(self.thumbs_path, mode=mode, allowZip64=True)
-            except:
+            except Exception:
                 # occurs under windows if the file is opened by another
                 # process
                 pass
@@ -3869,7 +3869,7 @@ class CatalogBuilder:
                 with zf:
                     try:
                         zf.getinfo(uuid + cover_crc)
-                    except:
+                    except Exception:
                         pass
                     else:
                         # uuid found in cache with matching crc
@@ -3922,7 +3922,7 @@ class CatalogBuilder:
             try:
                 self.generate_thumbnail(title, image_dir, thumb_file)
                 thumbs.append('thumbnail_{}.jpg'.format(int(title['id'])))
-            except:
+            except Exception:
                 if 'cover' in title and os.path.exists(title['cover']):
                     valid_cover = False
                     self.opts.log.warn(" *** Invalid cover file for '{}'***".format(title['title']))
@@ -4072,7 +4072,7 @@ class CatalogBuilder:
                     prefix_rule['pattern'] = rule[2]
                     prefix_rule['prefix'] = rule[3]
                     pr.append(prefix_rule)
-            except:
+            except Exception:
                 self.opts.log.error(f'malformed prefix_rules: {self.opts.prefix_rules!r}')
                 raise
         return pr
diff --git a/src/calibre/library/catalogs/utils.py b/src/calibre/library/catalogs/utils.py
index 4db3b1f967..c4fc3e16c7 100644
--- a/src/calibre/library/catalogs/utils.py
+++ b/src/calibre/library/catalogs/utils.py
@@ -171,7 +171,7 @@ class NumberToText:  # {{{
             try:
                 self.float_as_number = float(self.number)
                 number = int(self.number)
-            except:
+            except Exception:
                 return
 
             if number > 10**9:
diff --git a/src/calibre/library/check_library.py b/src/calibre/library/check_library.py
index ef990d963d..aedd40e7fa 100644
--- a/src/calibre/library/check_library.py
+++ b/src/calibre/library/check_library.py
@@ -142,7 +142,7 @@ class CheckLibrary:
                     # Record the book to check its formats
                     self.book_dirs.append((db_path, title_dir, id_))
                     found_titles = True
-            except:
+            except Exception:
                 traceback.print_exc()
                 # Sort-of check: exception processing directory
                 self.failed_folders.append((auth_dir, traceback.format_exc(), []))
@@ -154,7 +154,7 @@ class CheckLibrary:
         for x in self.book_dirs:
             try:
                 self.process_book(lib, x)
-            except:
+            except Exception:
                 traceback.print_exc()
                 # Sort-of check: exception processing directory
                 self.failed_folders.append((title_path, traceback.format_exc(), []))
diff --git a/src/calibre/library/coloring.py b/src/calibre/library/coloring.py
index dcf8497c87..2e58552af3 100644
--- a/src/calibre/library/coloring.py
+++ b/src/calibre/library/coloring.py
@@ -39,14 +39,14 @@ class Rule:  # {{{
         if (dt in ('int', 'float', 'rating') and action in ('lt', 'eq', 'gt')):
             try:
                 int(val) if dt == 'int' else float(val)
-            except:
+            except Exception:
                 return f'{val!r} is not a valid numerical value'
 
         if (dt in ('comments', 'series', 'text', 'enumeration') and 'pattern'
                 in action):
             try:
                 re.compile(val)
-            except:
+            except Exception:
                 return f'{val!r} is not a valid regular expression'
 
     @property
@@ -228,14 +228,14 @@ def rule_from_template(fm, template):
             raw = line[len(Rule.SIGNATURE):].strip()
             try:
                 color, conditions = json.loads(from_hex_bytes(raw))
-            except:
+            except Exception:
                 continue
             r = Rule(fm)
             r.color = color
             for c in conditions:
                 try:
                     r.add_condition(*c)
-                except:
+                except Exception:
                     continue
             if r.color and r.conditions:
                 return r
diff --git a/src/calibre/library/comments.py b/src/calibre/library/comments.py
index 8b792ed71a..dc464fa51f 100644
--- a/src/calibre/library/comments.py
+++ b/src/calibre/library/comments.py
@@ -60,7 +60,7 @@ def comments_to_html(comments):
     if sanitize_pat.search(comments) is not None:
         try:
             return sanitize_comments_html(comments)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             return '
'
diff --git a/src/calibre/library/database.py b/src/calibre/library/database.py
index 225ae9eec6..7ce86d3133 100644
--- a/src/calibre/library/database.py
+++ b/src/calibre/library/database.py
@@ -924,7 +924,7 @@ ALTER TABLE books ADD COLUMN isbn TEXT DEFAULT "" COLLATE NOCASE;
             return self.data[index][1]
         try:
             return self.conn.get('SELECT title FROM meta WHERE id=?',(index,), all=False)
-        except:
+        except Exception:
             return _('Unknown')
 
     def authors(self, index, index_is_id=False):
@@ -936,7 +936,7 @@ ALTER TABLE books ADD COLUMN isbn TEXT DEFAULT "" COLLATE NOCASE;
             return self.data[index][2]
         try:
             return self.conn.get('SELECT authors FROM meta WHERE id=?',(index,), all=False)
-        except:
+        except Exception:
             pass
 
     def author_id(self, index, index_is_id=False):
@@ -1008,7 +1008,7 @@ ALTER TABLE books ADD COLUMN isbn TEXT DEFAULT "" COLLATE NOCASE;
             ans = self.conn.get('SELECT series_index FROM books WHERE id=?', (index,), all=False)
         try:
             return float(ans)
-        except:
+        except Exception:
             return 1.0
 
     def books_in_series(self, series_id):
diff --git a/src/calibre/library/database2.py b/src/calibre/library/database2.py
index ff0d30e293..fe8f3676fe 100644
--- a/src/calibre/library/database2.py
+++ b/src/calibre/library/database2.py
@@ -160,7 +160,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         try:
             if isbytestring(library_path):
                 library_path = library_path.decode(filesystem_encoding)
-        except:
+        except Exception:
             traceback.print_exc()
         self.field_metadata = FieldMetadata()
         self.format_filename_cache = defaultdict(dict)
@@ -276,7 +276,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                         rules = migrate_old_rule(self.field_metadata, templ)
                         for templ in rules:
                             old_rules.append((col, templ))
-                    except:
+                    except Exception:
                         pass
             if old_rules:
                 self.prefs['column_color_rules'] += old_rules
@@ -303,7 +303,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 for t in ogst:
                     ngst[icu_lower(t)] = ogst[t]
                 self.prefs.set('grouped_search_terms', ngst)
-            except:
+            except Exception:
                 pass
 
         # migrate the gui_restriction preference to a virtual library
@@ -502,7 +502,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 # user category. Print the exception and continue.
                 try:
                     self.field_metadata.add_user_category(label='@' + cat, name=cat)
-                except:
+                except Exception:
                     traceback.print_exc()
 
         if len(saved_searches().names()):
@@ -731,7 +731,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                     try:
                         os.rename(os.path.join(curpath, oldseg),
                                 os.path.join(curpath, newseg))
-                    except:
+                    except Exception:
                         break  # Fail silently since nothing catastrophic has happened
                 curpath = os.path.join(curpath, newseg)
 
@@ -747,7 +747,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         for listener in self.listeners:
             try:
                 listener(event, ids)
-            except:
+            except Exception:
                 traceback.print_exc()
                 continue
 
@@ -795,7 +795,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         path = os.path.join(self.library_path, self.path(id, index_is_id=True), 'cover.jpg')
         try:
             return utcfromtimestamp(os.stat(path).st_mtime)
-        except:
+        except Exception:
             # Cover doesn't exist
             pass
         return self.last_modified()
@@ -850,7 +850,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 self.conn.commit()
                 try:
                     del self.dirtied_cache[book_id]
-                except:
+                except Exception:
                     pass
             elif dc_sequence is not None:
                 # print('book needs to be done again')
@@ -888,7 +888,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                     f.write(raw)
                 if remove_from_dirtied:
                     self.clear_dirtied(book_id, sequence)
-            except:
+            except Exception:
                 pass
             if callback is not None:
                 callback(book_id, mi, True)
@@ -978,7 +978,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 # no harm done. This way no need to call dirtied when
                 # cover is set/removed
                 mi.cover = 'cover.jpg'
-        except:
+        except Exception:
             # This almost certainly means that the book has been deleted while
             # the backup operation sat in the queue.
             pass
@@ -993,7 +993,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         idx = idx if index_is_id else self.id(idx)
         try:
             row = self.data._data[idx]
-        except:
+        except Exception:
             row = None
 
         if row is None:
@@ -1148,7 +1148,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 return identical_book_ids
             try:
                 book_ids = self.data.parse(query)
-            except:
+            except Exception:
                 traceback.print_exc()
                 return identical_book_ids
             if qauthors and book_ids:
@@ -1361,7 +1361,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         id = index if index_is_id else self.id(index)
         try:
             name = self.format_filename_cache[id][format.upper()]
-        except:
+        except Exception:
             return None
         if name:
             path = os.path.join(self.library_path, self.path(id, index_is_id=True))
@@ -1371,12 +1371,12 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 return fmt_path
             try:
                 candidates = glob.glob(os.path.join(path, '*'+format))
-            except:  # If path contains strange characters this throws an exc
+            except Exception:  # If path contains strange characters this throws an exc
                 candidates = []
             if format and candidates and os.path.exists(candidates[0]):
                 try:
                     shutil.copyfile(candidates[0], fmt_path)
-                except:
+                except Exception:
                     # This can happen if candidates[0] or fmt_path is too long,
                     # which can happen if the user copied the library from a
                     # non windows machine to a windows machine.
@@ -1413,7 +1413,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                     try:
                         if path != dest:
                             os.rename(path, dest)
-                    except:
+                    except Exception:
                         pass  # Nothing too catastrophic happened, the cases mismatch, that's all
                 else:
                     windows_atomic_move.copy_path_to(path, dest)
@@ -1429,14 +1429,14 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                         # Ensure that the file has the same case as dest
                         try:
                             os.rename(path, dest)
-                        except:
+                        except Exception:
                             pass  # Nothing too catastrophic happened, the cases mismatch, that's all
                 else:
                     if use_hardlink:
                         try:
                             hardlink_file(path, dest)
                             return
-                        except:
+                        except Exception:
                             pass
                     with open(path, 'rb') as f, open(dest, 'wb') as d:
                         shutil.copyfileobj(f, d)
@@ -1484,7 +1484,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                             try:
                                 hardlink_file(path, dest)
                                 return True
-                            except:
+                            except Exception:
                                 pass
                         with open(dest, 'wb') as d:
                             shutil.copyfileobj(f, d)
@@ -1518,7 +1518,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                         d = os.path.join(bd, 'format_abspath')
                         try:
                             os.makedirs(d)
-                        except:
+                        except Exception:
                             pass
                         fname = os.path.basename(path)
                         ret = os.path.join(d, fname)
@@ -1625,7 +1625,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         '''
         try:
             path = os.path.join(self.library_path, self.path(id, index_is_id=True))
-        except:
+        except Exception:
             path = None
         if path and os.path.exists(path):
             self.rmtree(path, permanent=permanent)
@@ -1654,7 +1654,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                     path = self.format_abspath(id, format, index_is_id=True)
                     if path:
                         delete_file(path)
-                except:
+                except Exception:
                     traceback.print_exc()
             self.format_filename_cache[id].pop(format.upper(), None)
             self.conn.execute('DELETE FROM data WHERE book=? AND format=?', (id, format.upper()))
@@ -1782,7 +1782,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         try:
             if new_cats != user_cats:
                 self.prefs.set('user_categories', new_cats)
-        except:
+        except Exception:
             pass
         return new_cats
 
@@ -1909,7 +1909,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                         if rating > 0:
                             item.rt += rating
                             item.rc += 1
-                    except:
+                    except Exception:
                         prints('get_categories: item', val, 'is not in', cat, 'list!')
                 else:
                     vals = book[dex].split(mult)
@@ -1931,7 +1931,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                             if rating > 0:
                                 item.rt += rating
                                 item.rc += 1
-                        except:
+                        except Exception:
                             prints('get_categories: item', val, 'is not in', cat, 'list!')
 
         # print('end phase "books":', time.clock() - last, 'seconds')
@@ -2301,7 +2301,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         def doit(func, *args, **kwargs):
             try:
                 func(*args, **kwargs)
-            except:
+            except Exception:
                 if ignore_errors:
                     traceback.print_exc()
                 else:
@@ -3231,7 +3231,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
             idx = 1.0
         try:
             idx = float(idx)
-        except:
+        except Exception:
             idx = 1.0
         self.conn.execute('UPDATE books SET series_index=? WHERE id=?', (idx, id))
         self.dirtied([id], commit=False)
@@ -3384,7 +3384,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
                 self.conn.commit()
             try:
                 mi = get_metadata(stream, format)
-            except:
+            except Exception:
                 mi = Metadata(title, ['calibre'])
             stream.seek(0)
             mi.title, mi.authors = title, ['calibre']
@@ -3493,7 +3493,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         if cover is not None:
             try:
                 self.set_cover(id, cover)
-            except:
+            except Exception:
                 traceback.print_exc()
         return id
 
@@ -3644,12 +3644,12 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
         self.connect()
         try:
             os.unlink(opath)
-        except:
+        except Exception:
             pass
         for dir in old_dirs:
             try:
                 shutil.rmtree(dir)
-            except:
+            except Exception:
                 pass
 
     def __iter__(self):
@@ -3702,7 +3702,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
             if s is None:
                 return default
             return json.loads(s, object_hook=from_json)
-        except:
+        except Exception:
             pass
         return default
 
@@ -3716,7 +3716,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
             for r in s:
                 res[r[0]] = json.loads(r[1], object_hook=from_json)
             return res
-        except:
+        except Exception:
             pass
         return default
 
diff --git a/src/calibre/library/prefs.py b/src/calibre/library/prefs.py
index f75a021c62..7cca5224df 100644
--- a/src/calibre/library/prefs.py
+++ b/src/calibre/library/prefs.py
@@ -24,7 +24,7 @@ class DBPrefs(dict):
         for key, val in self.db.conn.get('SELECT key,val FROM preferences'):
             try:
                 val = self.raw_to_object(val)
-            except:
+            except Exception:
                 prints('Failed to read value for:', key, 'from db')
                 continue
             dict.__setitem__(self, key, val)
@@ -87,7 +87,7 @@ class DBPrefs(dict):
                 data = data.encode('utf-8')
             with open(to_filename, 'wb') as f:
                 f.write(data)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
 
@@ -110,7 +110,7 @@ class DBPrefs(dict):
                 cls.clear()
                 cls.update(d)
                 return d
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             raise
diff --git a/src/calibre/library/restore.py b/src/calibre/library/restore.py
index 9c8029c5d0..f0eece6a3f 100644
--- a/src/calibre/library/restore.py
+++ b/src/calibre/library/restore.py
@@ -115,7 +115,7 @@ class Restore(Thread):
                 if self.successes == 0 and len(self.dirs) > 0:
                     raise Exception('Something bad happened')
                 self.replace_db()
-        except:
+        except Exception:
             self.tb = traceback.format_exc()
 
     def load_preferences(self):
@@ -138,7 +138,7 @@ class Restore(Thread):
                 return True
             self.progress_callback(_('Finished restoring preferences'), 1)
             return False
-        except:
+        except Exception:
             traceback.print_exc()
             self.progress_callback(None, 1)
             self.progress_callback(_('Restoring preferences and column metadata failed'), 0)
@@ -158,7 +158,7 @@ class Restore(Thread):
             dirpath, filenames, book_id = x
             try:
                 self.process_dir(dirpath, filenames, book_id)
-            except:
+            except Exception:
                 self.failed_dirs.append((dirpath, traceback.format_exc()))
             self.progress_callback(_('Processed') + ' ' + dirpath, i+1)
 
@@ -244,7 +244,7 @@ class Restore(Thread):
         for i, book in enumerate(self.books):
             try:
                 self.restore_book(book, db)
-            except:
+            except Exception:
                 self.failed_restores.append((book, traceback.format_exc()))
             self.progress_callback(book['mi'].title, i+1)
 
diff --git a/src/calibre/library/save_to_disk.py b/src/calibre/library/save_to_disk.py
index b2d9e40c7c..98b555c247 100644
--- a/src/calibre/library/save_to_disk.py
+++ b/src/calibre/library/save_to_disk.py
@@ -151,7 +151,7 @@ class Formatter(TemplateFormatter):
             key = key.lower()
             try:
                 b = self.book.get_user_metadata(key, False)
-            except:
+            except Exception:
                 traceback.print_exc()
                 b = None
             if b is not None and b['datatype'] == 'composite':
@@ -167,7 +167,7 @@ class Formatter(TemplateFormatter):
                     val = ','.join(val)
                 return val.replace('/', '_').replace('\\', '_')
             return ''
-        except:
+        except Exception:
             traceback.print_exc()
             return key
 
@@ -317,7 +317,7 @@ def update_metadata(mi, fmt, stream, plugboards, cdata, error_report=None, plugb
         if cdata:
             newmi.cover_data = ('jpg', cdata)
         set_metadata(stream, newmi, fmt, report_error=None if error_report is None else report_error)
-    except:
+    except Exception:
         if error_report is None:
             prints('Failed to set metadata for the', fmt, 'format of', mi.title)
             traceback.print_exc()
@@ -414,7 +414,7 @@ def save_to_disk(db, ids, root, opts=None, callback=None):
         try:
             failed, id, title = save_book_to_disk(x, db, root, opts, length)
             tb = _('Requested formats not available')
-        except:
+        except Exception:
             failed, id, title = True, x, db.title(x, index_is_id=True)
             tb = traceback.format_exc()
         if failed:
@@ -431,7 +431,7 @@ def read_serialized_metadata(data):
     mi = OPF(data['opf'], try_to_guess_cover=False, populate_spine=False, basedir=os.path.dirname(data['opf'])).to_book_metadata()
     try:
         mi.last_modified = parse_date(data['last_modified'])
-    except:
+    except Exception:
         pass
     mi.cover, mi.cover_data = None, (None, None)
     cdata = None
diff --git a/src/calibre/library/sqlite.py b/src/calibre/library/sqlite.py
index d72ecc073e..96e396b251 100644
--- a/src/calibre/library/sqlite.py
+++ b/src/calibre/library/sqlite.py
@@ -35,7 +35,7 @@ def _c_convert_timestamp(val):
         return None
     try:
         ret = _c_speedup.parse_date(val.strip())
-    except:
+    except Exception:
         ret = None
     if ret is None:
         return parse_date(val, as_utc=False)
@@ -62,7 +62,7 @@ def _py_convert_timestamp(val):
             sec = int(val[17:19])
             return datetime(year, month, day, hour, min, sec,
                     tzinfo=timezone(tzsecs))
-        except:
+        except Exception:
             pass
         return parse_date(val, as_utc=False)
     return None
@@ -219,12 +219,12 @@ def pynocase(one, two, encoding='utf-8'):
     if isbytestring(one):
         try:
             one = one.decode(encoding, 'replace')
-        except:
+        except Exception:
             pass
     if isbytestring(two):
         try:
             two = two.decode(encoding, 'replace')
-        except:
+        except Exception:
             pass
     return cmp(one.lower(), two.lower())
 
@@ -340,7 +340,7 @@ class DatabaseException(Exception):
         tb = '\n\t'.join(('\tRemote'+tb).splitlines())
         try:
             msg = str(err) +'\n' + tb
-        except:
+        except Exception:
             msg = repr(err) + '\n' + tb
         Exception.__init__(self, msg)
         self.orig_err = err
diff --git a/src/calibre/linux.py b/src/calibre/linux.py
index c81188de5f..9ca87f1bd5 100644
--- a/src/calibre/linux.py
+++ b/src/calibre/linux.py
@@ -81,7 +81,7 @@ class PreserveMIMEDefaults:  # {{{
             try:
                 with open(x, 'rb') as f:
                     self.initial_values[x] = f.read()
-            except:
+            except Exception:
                 self.initial_values[x] = None
 
     def __exit__(self, *args):
@@ -89,7 +89,7 @@ class PreserveMIMEDefaults:  # {{{
             if val is None:
                 try:
                     os.remove(path)
-                except:
+                except Exception:
                     pass
             elif os.path.exists(path):
                 try:
@@ -820,7 +820,7 @@ class PostInstall:
             os.chmod(dest, stat.S_IRWXU|stat.S_IRGRP|stat.S_IROTH)
             if os.geteuid() == 0:
                 os.chown(dest, 0, 0)
-        except:
+        except Exception:
             if self.opts.fatal_errors:
                 raise
             self.task_failed('Creating uninstaller failed')
@@ -847,7 +847,7 @@ class PostInstall:
             if self.opts.fatal_errors:
                 raise
             self.task_failed('Setting up completion failed')
-        except:
+        except Exception:
             if self.opts.fatal_errors:
                 raise
             self.task_failed('Setting up completion failed')
@@ -947,7 +947,7 @@ class PostInstall:
         if not os.path.exists(appdata):
             try:
                 os.mkdir(appdata)
-            except:
+            except Exception:
                 self.warning(f'Failed to create {appdata} not installing appdata files')
         if os.path.exists(appdata) and not os.access(appdata, os.W_OK):
             self.warning(f'Do not have write permissions for {appdata} not installing appdata files')
diff --git a/src/calibre/ptempfile.py b/src/calibre/ptempfile.py
index 5bd18388b0..a6544dfa0d 100644
--- a/src/calibre/ptempfile.py
+++ b/src/calibre/ptempfile.py
@@ -156,7 +156,7 @@ class PersistentTemporaryFile:
     def __del__(self):
         try:
             self.close()
-        except:
+        except Exception:
             pass
 
 
diff --git a/src/calibre/spell/dictionary.py b/src/calibre/spell/dictionary.py
index 09966958e6..cf6081d8d9 100644
--- a/src/calibre/spell/dictionary.py
+++ b/src/calibre/spell/dictionary.py
@@ -66,7 +66,7 @@ def catalog_online_dictionaries():
     loaded = json.loads(P('dictionaries/online-catalog.json', allow_user_override=False, data=True))
     try:
         loaded.update(json.loads(P('dictionaries/online-catalog.json', data=True)))
-    except:
+    except Exception:
         pass
     rslt = []
     for lang, directory in loaded.items():
diff --git a/src/calibre/srv/ajax.py b/src/calibre/srv/ajax.py
index 46c8ba1809..4f7f6ddc31 100644
--- a/src/calibre/srv/ajax.py
+++ b/src/calibre/srv/ajax.py
@@ -33,11 +33,11 @@ def ensure_val(x, *allowed):
 def get_pagination(query, num=100, offset=0):
     try:
         num = int(query.get('num', num))
-    except:
+    except Exception:
         raise HTTPNotFound('Invalid num')
     try:
         offset = int(query.get('offset', offset))
-    except:
+    except Exception:
         raise HTTPNotFound('Invalid offset')
     return num, offset
 
@@ -88,7 +88,7 @@ def book_to_json(ctx, rd, db, book_id,
         other_fmts = list(fmts)
         try:
             fmt = pf if pf in fmts else other_fmts[0]
-        except:
+        except Exception:
             fmt = None
         if fmts and fmt:
             other_fmts = [x for x in fmts if x != fmt]
@@ -349,7 +349,7 @@ def category(ctx, rd, encoded_name, library_id):
         sort_order = ensure_val(sort_order, 'asc', 'desc')
         try:
             dname = decode_name(encoded_name)
-        except:
+        except Exception:
             raise HTTPNotFound(f'Invalid encoding of category name {encoded_name!r}')
         base_url = ctx.url_for(globals()['category'], encoded_name=encoded_name, library_id=db.server_library_id)
 
@@ -382,7 +382,7 @@ def category(ctx, rd, encoded_name, library_id):
                 # User categories cannot be applied to books, so this is the
                 # complete set of items, no need to consider sub categories
                 items = categories[fullname]
-            except:
+            except Exception:
                 raise HTTPNotFound(f'User category {fullname!r} not found')
 
             parts = fullname.split('.')
@@ -475,7 +475,7 @@ def books_in(ctx, rd, encoded_category, encoded_item, library_id):
     with db.safe_read_lock:
         try:
             dname, ditem = map(decode_name, (encoded_category, encoded_item))
-        except:
+        except Exception:
             raise HTTPNotFound(f'Invalid encoded param: {encoded_category!r} ({encoded_item!r})')
         num, offset = get_pagination(rd.query)
         sort, sort_order = rd.query.get('sort', 'title'), rd.query.get('sort_order')
diff --git a/src/calibre/srv/loop.py b/src/calibre/srv/loop.py
index 8d4f4e677e..15f1f24277 100644
--- a/src/calibre/srv/loop.py
+++ b/src/calibre/srv/loop.py
@@ -550,7 +550,7 @@ class ServerLoop:
                     raise
                 except KeyboardInterrupt:
                     break
-                except:
+                except Exception:
                     self.log.exception('Error in ServerLoop.tick')
             self.shutdown()
 
diff --git a/src/calibre/srv/manage_users_cli.py b/src/calibre/srv/manage_users_cli.py
index f3d233166c..c8464f560a 100644
--- a/src/calibre/srv/manage_users_cli.py
+++ b/src/calibre/srv/manage_users_cli.py
@@ -402,7 +402,7 @@ def manage_users_cli(path=None, args=()):
             names = list(filter(None, [x.strip() for x in names.split(',')]))
             w = 'allowed_library_names' if c == 1 else 'blocked_library_names'
             t = _('Allowing access only to libraries: {}') if c == 1 else _(
-                'Allowing access to all libraries, except: {}')
+                'Allowing access to all libraries, except Exception: {}')
             prints(t.format(', '.join(names)))
             m.update_user_restrictions(username, {w: names})
 
diff --git a/src/calibre/srv/opds.py b/src/calibre/srv/opds.py
index 23cdd364ab..46dc62f7a2 100644
--- a/src/calibre/srv/opds.py
+++ b/src/calibre/srv/opds.py
@@ -125,7 +125,7 @@ def html_to_lxml(raw):
     raw = etree.tostring(root, encoding='unicode')
     try:
         return safe_xml_fromstring(raw, recover=False)
-    except:
+    except Exception:
         for x in root.iterdescendants():
             remove = []
             for attr in x.attrib:
@@ -136,7 +136,7 @@ def html_to_lxml(raw):
         raw = etree.tostring(root, encoding='unicode')
         try:
             return safe_xml_fromstring(raw, recover=False)
-        except:
+        except Exception:
             from calibre.ebooks.oeb.parse_utils import _html4_parse
             return _html4_parse(raw)
 
diff --git a/src/calibre/utils/complete.py b/src/calibre/utils/complete.py
index 74f4f722d5..9e6be6855c 100644
--- a/src/calibre/utils/complete.py
+++ b/src/calibre/utils/complete.py
@@ -107,7 +107,7 @@ class EbookConvert:
                     try:
                         parser, _ = create_option_parser(self.words[:3], log)
                         ans += list(get_opts_from_parser(parser, self.prefix))
-                    except:
+                    except Exception:
                         pass
             if self.previous.startswith('-'):
                 ans += list(files_and_dirs(self.prefix, None))
diff --git a/src/calibre/utils/config.py b/src/calibre/utils/config.py
index 58856666c8..8b9ff5b041 100644
--- a/src/calibre/utils/config.py
+++ b/src/calibre/utils/config.py
@@ -354,7 +354,7 @@ class XMLConfig(dict):
                 d = self.raw_to_object(raw) if raw.strip() else {}
             except SystemError:
                 pass
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
                 d = {}
diff --git a/src/calibre/utils/date.py b/src/calibre/utils/date.py
index a3b815b865..c10808b36b 100644
--- a/src/calibre/utils/date.py
+++ b/src/calibre/utils/date.py
@@ -28,7 +28,7 @@ if iswindows:
     try:
         ctypes.windll.kernel32.GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SSHORTDATE, buf, 255)
         parse_date_day_first = buf.value.index(b'd') < buf.value.index(b'M')
-    except:
+    except Exception:
         parse_date_day_first = False
     del ctypes, LOCALE_SSHORTDATE, buf, LOCALE_USER_DEFAULT
 elif ismacos:
@@ -36,7 +36,7 @@ elif ismacos:
         from calibre_extensions.usbobserver import date_format
         date_fmt = date_format()
         parse_date_day_first = date_fmt.index('d') < date_fmt.index('M')
-    except:
+    except Exception:
         parse_date_day_first = False
 else:
     try:
@@ -52,7 +52,7 @@ else:
         raw = locale.nl_langinfo(locale.D_FMT)
         parse_date_day_first = first_index(raw, ('%d', '%a', '%A')) < first_index(raw, ('%m', '%b', '%B'))
         del raw, first_index
-    except:
+    except Exception:
         parse_date_day_first = False
 
 DEFAULT_DATE = datetime(2000,1,1, tzinfo=utc_tz)
diff --git a/src/calibre/utils/filenames.py b/src/calibre/utils/filenames.py
index 5182f75ea6..7a62a9fdc0 100644
--- a/src/calibre/utils/filenames.py
+++ b/src/calibre/utils/filenames.py
@@ -221,7 +221,7 @@ def case_preserving_open_file(path, mode='wb', mkdir_mode=0o777):
         cl = comp.lower()
         try:
             candidates = [c for c in os.listdir(cpath) if c.lower() == cl]
-        except:
+        except Exception:
             # Don't have permission to do the listdir, assume the case is
             # correct as we have no way to check it.
             pass
@@ -421,7 +421,7 @@ class WindowsAtomicFolderMove:
                     raise err
                 prints(f'CreateFile failed for: {f!r}')
                 raise
-            except:
+            except Exception:
                 self.close_handles()
                 prints(f'CreateFile failed for: {f!r}')
                 raise
diff --git a/src/calibre/utils/fonts/scanner.py b/src/calibre/utils/fonts/scanner.py
index 8ec3c1585d..b50c4b4de2 100644
--- a/src/calibre/utils/fonts/scanner.py
+++ b/src/calibre/utils/fonts/scanner.py
@@ -43,7 +43,7 @@ def fc_list():
         return default_font_dirs()
     try:
         lib = ctypes.CDLL(lib)
-    except:
+    except Exception:
         return default_font_dirs()
 
     prototype = ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_void_p)
@@ -278,7 +278,7 @@ class FontScanner(Thread):
             try:
                 raw = self.get_font_data(font)
                 return supports_text(raw, text)
-            except:
+            except Exception:
                 pass
             return False
 
diff --git a/src/calibre/utils/fonts/utils.py b/src/calibre/utils/fonts/utils.py
index fc15fc4032..4e5612f59a 100644
--- a/src/calibre/utils/fonts/utils.py
+++ b/src/calibre/utils/fonts/utils.py
@@ -481,7 +481,7 @@ def supports_text(raw, text, has_only_printable_chars=False):
         for glyph_id in get_glyph_ids(raw, text):
             if glyph_id == 0:
                 return False
-    except:
+    except Exception:
         return False
     return True
 
diff --git a/src/calibre/utils/fonts/win_fonts.py b/src/calibre/utils/fonts/win_fonts.py
index 8db1d23bb2..c6d293212a 100644
--- a/src/calibre/utils/fonts/win_fonts.py
+++ b/src/calibre/utils/fonts/win_fonts.py
@@ -90,7 +90,7 @@ class WinFonts:
 
             try:
                 family_name, sub_family_name, full_name = get_font_names(data)
-            except:
+            except Exception:
                 pass
 
             if normalize:
@@ -112,7 +112,7 @@ class WinFonts:
                 try:
                     sub_family_name.encode('ascii')
                     subf = sub_family_name
-                except:
+                except Exception:
                     subf = ''
 
                 name = family + ((' ' + subf) if subf else '')
diff --git a/src/calibre/utils/formatter.py b/src/calibre/utils/formatter.py
index 042f2369e9..8d9874f17b 100644
--- a/src/calibre/utils/formatter.py
+++ b/src/calibre/utils/formatter.py
@@ -378,7 +378,7 @@ class _Parser:
             token = self.prog[self.lex_pos][1]
             self.lex_pos += 1
             return token
-        except:
+        except Exception:
             return None
 
     def consume(self):
@@ -389,21 +389,21 @@ class _Parser:
         try:
             token = self.prog[self.lex_pos]
             return token[1] == op and token[0] == self.LEX_OP
-        except:
+        except Exception:
             return False
 
     def token_op_is_string_infix_compare(self):
         self.check_eol()
         try:
             return self.prog[self.lex_pos][0] == self.LEX_STRING_INFIX
-        except:
+        except Exception:
             return False
 
     def token_op_is_numeric_infix_compare(self):
         self.check_eol()
         try:
             return self.prog[self.lex_pos][0] == self.LEX_NUMERIC_INFIX
-        except:
+        except Exception:
             return False
 
     def token_is_newline(self):
@@ -413,7 +413,7 @@ class _Parser:
         self.check_eol()
         try:
             return self.prog[self.lex_pos][0] == self.LEX_ID
-        except:
+        except Exception:
             return False
 
     def token_is(self, candidate):
@@ -421,35 +421,35 @@ class _Parser:
         try:
             token = self.prog[self.lex_pos]
             return token[1] == candidate and token[0] == self.LEX_KEYWORD
-        except:
+        except Exception:
             return False
 
     def token_is_keyword(self):
         self.check_eol()
         try:
             return self.prog[self.lex_pos][0] == self.LEX_KEYWORD
-        except:
+        except Exception:
             return False
 
     def token_is_constant(self):
         self.check_eol()
         try:
             return self.prog[self.lex_pos][0] == self.LEX_CONST
-        except:
+        except Exception:
             return False
 
     def token_is_eof(self):
         self.check_eol()
         try:
             return self.prog[self.lex_pos][0] == self.LEX_EOF
-        except:
+        except Exception:
             return True
 
     def token_text(self):
         self.check_eol()
         try:
             return self.prog[self.lex_pos][1]
-        except:
+        except Exception:
             return _("'End of program'")
 
     def program(self, parent, funcs, prog):
@@ -1124,7 +1124,7 @@ class _Interpreter:
             if (self.break_reporter):
                 self.break_reporter(prog.node_name, self.locals[prog.name], prog.line_number)
             return self.locals[prog.name]
-        except:
+        except Exception:
             self.error(_("Unknown identifier '{0}'").format(prog.name), prog.line_number)
 
     def do_node_func(self, prog):
@@ -1256,11 +1256,11 @@ class _Interpreter:
                 return res
             except StopException:
                 raise
-            except:
+            except Exception:
                 self.error(_("Unknown field '{0}'").format(name), prog.line_number)
         except (StopException, ValueError):
             raise
-        except:
+        except Exception:
             self.error(_("Unknown field '{0}'").format('internal parse error'),
                        prog.line_number)
 
@@ -1290,7 +1290,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Unknown field '{0}'").format('internal parse error'),
                        prog.line_number)
 
@@ -1429,7 +1429,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Error during string comparison: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1457,7 +1457,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Value used in comparison is not a number: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1474,7 +1474,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Error during operator evaluation: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1491,7 +1491,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Error during operator evaluation: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1513,7 +1513,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Error during operator evaluation: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1531,7 +1531,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Error during operator evaluation: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1543,7 +1543,7 @@ class _Interpreter:
             return res
         except (StopException, ValueError) as e:
             raise e
-        except:
+        except Exception:
             self.error(_("Error during operator evaluation: "
                          "operator '{0}'").format(prog.operator), prog.line_number)
 
@@ -1670,7 +1670,7 @@ class TemplateFormatter(string.Formatter):
         elif 'eEfFgGn%'.find(typ) >= 0:
             try:
                 val = float(val)
-            except:
+            except Exception:
                 raise ValueError(
                     _('format: type {0} requires a decimal (float) value, got {1}').format(typ, val))
         return str(('{0:'+fmt+'}').format(val))
@@ -1681,7 +1681,7 @@ class TemplateFormatter(string.Formatter):
             if matches is None or matches.lastindex != 3:
                 return fmt, '', ''
             return matches.groups()
-        except:
+        except Exception:
             if DEBUG:
                 traceback.print_exc()
             return fmt, '', ''
diff --git a/src/calibre/utils/formatter_functions.py b/src/calibre/utils/formatter_functions.py
index 69fb3b5436..2ee6ff011b 100644
--- a/src/calibre/utils/formatter_functions.py
+++ b/src/calibre/utils/formatter_functions.py
@@ -274,7 +274,7 @@ class BuiltinFormatterFunction(FormatterFunction):
                         lambda x: inspect.isfunction(x) and x.__name__ == 'evaluate')
         try:
             lines = [l[4:] for l in inspect.getsourcelines(eval_func[0][1])[0]]
-        except:
+        except Exception:
             lines = []
         self.program_text = ''.join(lines)
 
@@ -407,7 +407,7 @@ r'''
     def evaluate(self, formatter, kwargs, mi, locals, a):
         try:
             return len(a)
-        except:
+        except Exception:
             return -1
 
 
@@ -883,7 +883,7 @@ many ``prefix, string`` pairs as you wish.
             raise ValueError(_('strcat_max requires an even number of arguments'))
         try:
             max = int(args[0])
-        except:
+        except Exception:
             raise ValueError(_('first argument to strcat_max must be an integer'))
 
         i = 2
@@ -894,7 +894,7 @@ many ``prefix, string`` pairs as you wish.
                     break
                 result = result + args[i] + args[i+1]
                 i += 2
-        except:
+        except Exception:
             pass
         return result.strip()
 
@@ -1198,7 +1198,7 @@ usually comma but is ampersand for author-like lists.
         val = val.split(sep)
         try:
             return val[index].strip()
-        except:
+        except Exception:
             return ''
 
 
@@ -1275,7 +1275,7 @@ that format names are always uppercase, as in EPUB.
             data = sorted(fmt_data.items(), key=lambda x:x[1]['mtime'], reverse=True)
             return ','.join(k.upper()+':'+format_date(v['mtime'], fmt)
                         for k,v in data)
-        except:
+        except Exception:
             return ''
 
 
@@ -1296,7 +1296,7 @@ format names are always uppercase, as in EPUB.
         fmt_data = mi.get('format_metadata', {})
         try:
             return ','.join(k.upper()+':'+str(v['size']) for k,v in iteritems(fmt_data))
-        except:
+        except Exception:
             return ''
 
 
@@ -1318,7 +1318,7 @@ format names are always uppercase, as in EPUB.
         fmt_data = mi.get('format_metadata', {})
         try:
             return sep.join(k.upper()+':'+str(v['path']) for k,v in iteritems(fmt_data))
-        except:
+        except Exception:
             return ''
 
 
@@ -1400,7 +1400,7 @@ representing that number in KB, MB, GB, etc.
     def evaluate(self, formatter, kwargs, mi, locals, val):
         try:
             return human_readable(round(float(val)))
-        except:
+        except Exception:
             return ''
 
 
@@ -1428,17 +1428,17 @@ Python[/URL] documentation for more examples. Returns the empty string if format
             template = '{0:' + template + '}'
         try:
             v1 = float(val)
-        except:
+        except Exception:
             return ''
         try:  # Try formatting the value as a float
             return template.format(v1)
-        except:
+        except Exception:
             pass
         try:  # Try formatting the value as an int
             v2 = trunc(v1)
             if v2 == v1:
                 return template.format(v2)
-        except:
+        except Exception:
             pass
         return ''
 
@@ -1478,7 +1478,7 @@ Examples assuming that the tags column (which is comma-separated) contains "A, B
                 return sep.join(val[si:])
             else:
                 return sep.join(val[si:ei])
-        except:
+        except Exception:
             return ''
 
 
@@ -1535,7 +1535,7 @@ Examples:
                     t = '.'.join(components[si:ei]).strip()
                 if t:
                     rv.add(t)
-            except:
+            except Exception:
                 pass
         return ', '.join(sorted(rv, key=sort_key))
 
@@ -1601,7 +1601,7 @@ contain ``MMMM``. Using ``format_date_field()`` avoids this problem.
             else:
                 s = format_date(parse_date(val), format_string)
             return s
-        except:
+        except Exception:
             s = 'BAD DATE'
         return s
 
@@ -1725,7 +1725,7 @@ column's value in your save/send templates
                 if v is not None:
                     return str(mi._proxy_metadata.book_size)
                 return ''
-            except:
+            except Exception:
                 pass
             return ''
         self.only_in_gui_error()
@@ -2242,7 +2242,7 @@ returns the empty string.
             d2 = parse_date(date2)
             if d2 == UNDEFINED_DATE:
                 return ''
-        except:
+        except Exception:
             return ''
         i = d1 - d2
         return f'{i.days+(i.seconds/(24.0*60.0*60.0)):.1f}'
@@ -2322,7 +2322,7 @@ return the strings in the language of the current locale. ``lang_codes`` is a co
                 n = calibre_langcode_to_name(c, localize != '0')
                 if n:
                     retval.append(n)
-            except:
+            except Exception:
                 pass
         return ', '.join(retval)
 
@@ -2346,7 +2346,7 @@ current locale. ``lang_strings`` is a comma-separated list.
                 cv = canonicalize_lang(c)
                 if cv:
                     retval.append(canonicalize_lang(cv))
-            except:
+            except Exception:
                 pass
         return ', '.join(retval)
 
@@ -2719,7 +2719,7 @@ available with custom ratings columns.
         err_msg = _('The rating must be a number between 0 and 5')
         try:
             v = float(value) * 2
-        except:
+        except Exception:
             raise ValueError(err_msg)
         if v < 0 or v > 10:
             raise ValueError(err_msg)
@@ -2750,7 +2750,7 @@ the ``title_sort``.
         try:
             for v in [x.strip() for x in val.split(separator)]:
                 result.append(title_sort(v).replace(',', ';'))
-        except:
+        except Exception:
             traceback.print_exc()
         return separator.join(sorted(result, key=sort_key))
 
diff --git a/src/calibre/utils/icu.py b/src/calibre/utils/icu.py
index e545b967eb..d3011c0b4a 100644
--- a/src/calibre/utils/icu.py
+++ b/src/calibre/utils/icu.py
@@ -35,14 +35,14 @@ def is_ascii(name):
 try:
     if is_ascii(sys.getdefaultencoding()):
         _icu.set_default_encoding(b'utf-8')
-except:
+except Exception:
     import traceback
     traceback.print_exc()
 
 try:
     if is_ascii(sys.getfilesystemencoding()):
         _icu.set_filesystem_encoding(b'utf-8')
-except:
+except Exception:
     import traceback
     traceback.print_exc()
 del is_ascii
diff --git a/src/calibre/utils/ipc/job.py b/src/calibre/utils/ipc/job.py
index b1795e12ac..fdaa94587d 100644
--- a/src/calibre/utils/ipc/job.py
+++ b/src/calibre/utils/ipc/job.py
@@ -62,18 +62,18 @@ class BaseJob:
                 try:
                     prints('Job:', self.id, self.description, 'finished')
                     prints('\t'.join(self.details.splitlines(True)))
-                except:
+                except Exception:
                     pass
             if not self._done_called:
                 self._done_called = True
                 try:
                     self.done(self)
-                except:
+                except Exception:
                     pass
                 try:
                     if callable(self.done2):
                         self.done2(self)
-                except:
+                except Exception:
                     pass
         elif self.start_time is not None:
             self._run_state = self.RUNNING
diff --git a/src/calibre/utils/ipc/launch.py b/src/calibre/utils/ipc/launch.py
index df73c4da48..53465ac97a 100644
--- a/src/calibre/utils/ipc/launch.py
+++ b/src/calibre/utils/ipc/launch.py
@@ -19,7 +19,7 @@ from polyglot.builtins import environ_item, native_string_type, string_or_bytes
 if iswindows:
     try:
         windows_null_file = open(os.devnull, 'wb')
-    except:
+    except Exception:
         raise RuntimeError('NUL file missing in windows. This indicates a'
                 ' corrupted windows. You should contact Microsoft'
                 ' for assistance and/or follow the steps described here: https://bytes.com/topic/net/answers/264804-compile-error-null-device-missing')
@@ -28,7 +28,7 @@ if iswindows:
 def renice(niceness):
     try:
         os.nice(niceness)
-    except:
+    except Exception:
         pass
 
 
@@ -143,7 +143,7 @@ class Worker:
     def close_log_file(self):
         try:
             self._file.close()
-        except:
+        except Exception:
             pass
 
     def kill(self):
@@ -160,7 +160,7 @@ class Worker:
                 finally:
                     if self.is_alive:
                         self.child.kill()
-        except:
+        except Exception:
             pass
 
     def __init__(self, env=None, gui=False, job_name=None):
diff --git a/src/calibre/utils/ipc/server.py b/src/calibre/utils/ipc/server.py
index 61b39aa566..808a392718 100644
--- a/src/calibre/utils/ipc/server.py
+++ b/src/calibre/utils/ipc/server.py
@@ -145,7 +145,7 @@ class Server(Thread):
             except BaseException:
                 try:
                     w.kill()
-                except:
+                except Exception:
                     pass
                 b.close()
                 import traceback
@@ -184,7 +184,7 @@ class Server(Thread):
             for worker in [w for w in self.workers if not w.is_alive]:
                 try:
                     worker.close_log_file()
-                except:
+                except Exception:
                     pass
                 self.workers.remove(worker)
                 job = worker.job
@@ -196,7 +196,7 @@ class Server(Thread):
                         with open(worker.rfile, 'rb') as f:
                             job.result = pickle_loads(f.read())
                         os.remove(worker.rfile)
-                    except:
+                    except Exception:
                         pass
                 job.duration = time.time() - job.start_time
                 self.changed_jobs_queue.put(job)
@@ -281,17 +281,17 @@ class Server(Thread):
     def close(self):
         try:
             self.add_jobs_queue.put(None)
-        except:
+        except Exception:
             pass
         try:
             self.listener.close()
-        except:
+        except Exception:
             pass
         time.sleep(0.2)
         for worker in list(self.workers):
             try:
                 worker.kill()
-            except:
+            except Exception:
                 pass
 
     def __enter__(self):
diff --git a/src/calibre/utils/ipc/simple_worker.py b/src/calibre/utils/ipc/simple_worker.py
index bbe8c8a4d9..5a336979e7 100644
--- a/src/calibre/utils/ipc/simple_worker.py
+++ b/src/calibre/utils/ipc/simple_worker.py
@@ -72,14 +72,14 @@ class OffloadWorker:
             eintr_retry_call(self.conn.send, None)
         except OSError:
             pass
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
         finally:
             self.conn = None
             try:
                 os.remove(self.worker.log_path)
-            except:
+            except Exception:
                 pass
             self.kill_thread.start()
 
@@ -187,7 +187,7 @@ def two_part_fork_job(env=None, priority='normal', cwd=None):
             if no_output:
                 try:
                     os.remove(w.log_path)
-                except:
+                except Exception:
                     pass
         if not no_output:
             ans['stdout_stderr'] = w.log_path
@@ -297,12 +297,12 @@ def main():
                     mod = importlib.import_module(mod)
                 func = getattr(mod, func)
             res = {'result':func(*args, **kwargs)}
-        except:
+        except Exception:
             res = {'tb': traceback.format_exc()}
 
         try:
             conn.send(res)
-        except:
+        except Exception:
             # Maybe EINTR
             conn.send(res)
 
@@ -330,7 +330,7 @@ def offload():
                         m = importlib.import_module(mod)
                     func_cache[(mod, func)] = f = getattr(m, func)
                 res['result'] = f(*args, **kwargs)
-            except:
+            except Exception:
                 import traceback
                 res['tb'] = traceback.format_exc()
 
diff --git a/src/calibre/utils/ipc/worker.py b/src/calibre/utils/ipc/worker.py
index 1dce85410b..573b6249d6 100644
--- a/src/calibre/utils/ipc/worker.py
+++ b/src/calibre/utils/ipc/worker.py
@@ -86,7 +86,7 @@ class Progress(Thread):
                 break
             try:
                 eintr_retry_call(self.conn.send, x)
-            except:
+            except Exception:
                 break
 
 
diff --git a/src/calibre/utils/localization.py b/src/calibre/utils/localization.py
index 9cd67fdc08..a3f926a5b6 100644
--- a/src/calibre/utils/localization.py
+++ b/src/calibre/utils/localization.py
@@ -54,7 +54,7 @@ def get_system_locale():
             lang = lang.strip()
             if not lang:
                 lang = None
-        except:
+        except Exception:
             pass  # Windows XP does not have the GetUserDefaultLocaleName fn
     elif ismacos:
         from calibre_extensions.usbobserver import user_locale
@@ -75,12 +75,12 @@ def get_system_locale():
                     if os.environ.get(var) == 'C':
                         lang = 'en_US'
                         break
-        except:
+        except Exception:
             pass  # This happens on Ubuntu apparently
         if lang is None and 'LANG' in os.environ:  # Needed for OS X
             try:
                 lang = os.environ['LANG']
-            except:
+            except Exception:
                 pass
     if lang:
         lang = lang.replace('-', '_')
@@ -109,7 +109,7 @@ def get_lang():
         return lang
     try:
         lang = get_system_locale()
-    except:
+    except Exception:
         import traceback
         traceback.print_exc()
         lang = None
@@ -244,18 +244,18 @@ def translator_for_lang(lang):
             isof = mpath + '/iso639.mo'
             try:
                 iso639 = io.BytesIO(zf.read(isof))
-            except:
+            except Exception:
                 pass  # No iso639 translations for this lang
             isof = mpath + '/iso3166.mo'
             try:
                 iso3166 = io.BytesIO(zf.read(isof))
-            except:
+            except Exception:
                 pass  # No iso3166 translations for this lang
             if buf is not None:
                 from calibre.utils.serialize import msgpack_loads
                 try:
                     lcdata = msgpack_loads(zf.read(mpath + '/lcdata.calibre_msgpack'))
-                except:
+                except Exception:
                     pass  # No lcdata
 
     if buf is not None:
@@ -432,7 +432,7 @@ def calibre_langcode_to_name(lc, localize=True):
     translate = _ if localize else lambda x: x
     try:
         return translate(iso639['by_3'][lc])
-    except:
+    except Exception:
         pass
     return lc
 
diff --git a/src/calibre/utils/localunzip.py b/src/calibre/utils/localunzip.py
index a8828c0eaf..3c3970d1d5 100644
--- a/src/calibre/utils/localunzip.py
+++ b/src/calibre/utils/localunzip.py
@@ -54,12 +54,12 @@ def decode_arcname(name):
         from calibre.ebooks.chardet import detect
         try:
             name = name.decode('utf-8')
-        except:
+        except Exception:
             res = detect(name)
             encoding = res['encoding']
             try:
                 name = name.decode(encoding)
-            except:
+            except Exception:
                 name = name.decode('utf-8', 'replace')
     return name
 
diff --git a/src/calibre/utils/mdns.py b/src/calibre/utils/mdns.py
index dd7b426677..9ec753a71a 100644
--- a/src/calibre/utils/mdns.py
+++ b/src/calibre/utils/mdns.py
@@ -72,7 +72,7 @@ def _get_external_ip():
                 ipaddr = s.getsockname()[0]
                 if not ipaddr.startswith('127.'):
                     break
-            except:
+            except Exception:
                 time.sleep(0.3)
     # print('ipaddr: %s' % ipaddr)
     return ipaddr
@@ -128,7 +128,7 @@ def start_server():
 def inet_aton(addr):
     try:
         return socket.inet_pton(socket.AF_INET6, addr)
-    except:
+    except Exception:
         return socket.inet_pton(socket.AF_INET, addr)
 
 
@@ -136,16 +136,16 @@ def create_service(desc, service_type, port, properties, add_hostname, use_ip_ad
     port = int(port)
     try:
         hostname = ascii_text(force_unicode(socket.gethostname())).partition('.')[0]
-    except:
+    except Exception:
         hostname = 'Unknown'
 
     if add_hostname:
         try:
             desc += f' (on {hostname} port {port})'
-        except:
+        except Exception:
             try:
                 desc += f' (on {hostname})'
-            except:
+            except Exception:
                 pass
 
     if use_ip_address:
diff --git a/src/calibre/utils/recycle_bin.py b/src/calibre/utils/recycle_bin.py
index 304a4bc608..f598d2b6f9 100644
--- a/src/calibre/utils/recycle_bin.py
+++ b/src/calibre/utils/recycle_bin.py
@@ -45,7 +45,7 @@ if iswindows:
                 break
             try:
                 recycle_path(path)
-            except:
+            except Exception:
                 eintr_retry_call(stdout.write, b'KO\n')
                 stdout.flush()
                 try:
@@ -123,7 +123,7 @@ def delete_file(path, permanent=False):
         try:
             recycle(path)
             return
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
     os.remove(path)
@@ -136,7 +136,7 @@ def delete_tree(path, permanent=False):
             # leading to access errors. If we get an exception, wait and hope
             # that whatever has the file (Antivirus, DropBox?) lets go of it.
             shutil.rmtree(path)
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             time.sleep(1)
@@ -146,7 +146,7 @@ def delete_tree(path, permanent=False):
             try:
                 recycle(path)
                 return
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
         delete_tree(path, permanent=True)
diff --git a/src/calibre/utils/resources.py b/src/calibre/utils/resources.py
index 42132815cc..e8d64f9a2d 100644
--- a/src/calibre/utils/resources.py
+++ b/src/calibre/utils/resources.py
@@ -25,7 +25,7 @@ class PathResolver:
             try:
                 return os.path.exists(path) and os.path.isdir(path) and \
                        os.listdir(path)
-            except:
+            except Exception:
                 pass
             return False
 
diff --git a/src/calibre/utils/search_query_parser.py b/src/calibre/utils/search_query_parser.py
index 22d013a750..221dd87759 100644
--- a/src/calibre/utils/search_query_parser.py
+++ b/src/calibre/utils/search_query_parser.py
@@ -445,7 +445,7 @@ class SearchQueryParser:
             return ss
         except ParseException as e:
             raise e
-        except:  # convert all exceptions (e.g., missing key) to a parse error
+        except Exception:  # convert all exceptions (e.g., missing key) to a parse error
             import traceback
             traceback.print_exc()
             raise ParseException(_('Unknown error in saved search: {0}').format(query))
diff --git a/src/calibre/utils/smtp.py b/src/calibre/utils/smtp.py
index e3cc638a5a..af79026dae 100644
--- a/src/calibre/utils/smtp.py
+++ b/src/calibre/utils/smtp.py
@@ -194,7 +194,7 @@ def sendmail(msg, from_, to, localhost=None, verbose=0, timeout=None,
     finally:
         try:
             ret = s.quit()
-        except:
+        except Exception:
             pass  # Ignore so as to not hide original error
     return ret
 
@@ -329,7 +329,7 @@ def main(args=sys.argv):
              timeout=opts.timeout, relay=opts.relay, username=opts.username,
              password=opts.password, port=opts.port,
              encryption=opts.encryption_method, verify_server_cert=not opts.dont_verify_server_certificate, cafile=opts.cafile)
-    except:
+    except Exception:
         if outbox is not None:
             outbox.add(msg)
             outbox.close()
diff --git a/src/calibre/utils/terminal.py b/src/calibre/utils/terminal.py
index 047b457528..448932cb6d 100644
--- a/src/calibre/utils/terminal.py
+++ b/src/calibre/utils/terminal.py
@@ -265,7 +265,7 @@ def geometry():
 
             ti = windows_terminfo()
             return (ti.dwSize.X or 80, ti.dwSize.Y or 25)
-        except:
+        except Exception:
             return 80, 25
     else:
         try:
diff --git a/src/calibre/utils/threadpool.py b/src/calibre/utils/threadpool.py
index 5db19d17bc..0c63852c97 100644
--- a/src/calibre/utils/threadpool.py
+++ b/src/calibre/utils/threadpool.py
@@ -99,7 +99,7 @@ class WorkerThread(threading.Thread):
                 self.resultQueue.put(
                     (request, request.callable(*request.args, **request.kwds))
                 )
-            except:
+            except Exception:
                 request.exception = True
                 import traceback
                 self.resultQueue.put((request, traceback.format_exc()))
diff --git a/src/calibre/web/__init__.py b/src/calibre/web/__init__.py
index 03905d2ffd..22709f44b4 100644
--- a/src/calibre/web/__init__.py
+++ b/src/calibre/web/__init__.py
@@ -55,7 +55,7 @@ def get_download_filename(url, cookie_file=None):
     try:
         with closing(br.open(url)) as r:
             filename = get_download_filename_from_response(r)
-    except:
+    except Exception:
         import traceback
         traceback.print_exc()
 
diff --git a/src/calibre/web/feeds/__init__.py b/src/calibre/web/feeds/__init__.py
index 11b0b67f46..266ded702a 100644
--- a/src/calibre/web/feeds/__init__.py
+++ b/src/calibre/web/feeds/__init__.py
@@ -48,7 +48,7 @@ class Article:
             try:
                 s = html.fragment_fromstring(summary, create_parent=True)
                 summary = html.tostring(s, method='text', encoding='unicode')
-            except:
+            except Exception:
                 print('Failed to process article summary, deleting:')
                 print(summary.encode('utf-8'))
                 traceback.print_exc()
@@ -210,7 +210,7 @@ class Feed:
             title = re.sub(r'<.+?>', '', title)
         try:
             link  = self.get_article_url(item)
-        except:
+        except Exception:
             self.logger.warning(f'Failed to get link for {title}')
             self.logger.debug(traceback.format_exc())
             link = None
diff --git a/src/calibre/web/feeds/news.py b/src/calibre/web/feeds/news.py
index 32b4a7fa87..05d669424d 100644
--- a/src/calibre/web/feeds/news.py
+++ b/src/calibre/web/feeds/news.py
@@ -671,7 +671,7 @@ class BasicNewsRecipe(Recipe):
         if self.auto_cleanup:
             try:
                 raw_html = self.extract_readable_article(raw_html, url)
-            except:
+            except Exception:
                 self.log.exception(f'Auto cleanup of URL: {url!r} failed')
 
         return raw_html
@@ -793,7 +793,7 @@ class BasicNewsRecipe(Recipe):
 
         try:
             frag = fragment_fromstring(article_html)
-        except:
+        except Exception:
             doc = document_fromstring(article_html)
             frag = doc.xpath('//body')[-1]
         if frag.tag == 'html':
@@ -1104,7 +1104,7 @@ class BasicNewsRecipe(Recipe):
             url, f, a, feed_len = job_info
             try:
                 article = self.feed_objects[f].articles[a]
-            except:
+            except Exception:
                 self.log.exception('Failed to get article object for postprocessing')
             else:
                 self.populate_article_metadata(article, ans, first_fetch)
@@ -1145,7 +1145,7 @@ class BasicNewsRecipe(Recipe):
             lang = self.language.replace('_', '-').partition('-')[0].lower()
             if lang == 'und':
                 lang = None
-        except:
+        except Exception:
             lang = None
         return lang
 
@@ -1203,7 +1203,7 @@ class BasicNewsRecipe(Recipe):
                             self.image_counter += 1
                             feed.image_url = img
                             self.image_map[feed.image_url] = img
-                        except:
+                        except Exception:
                             pass
             if isinstance(feed.image_url, bytes):
                 feed.image_url = feed.image_url.decode(sys.getfilesystemencoding(), 'strict')
@@ -1350,7 +1350,7 @@ class BasicNewsRecipe(Recipe):
                     url = self.print_version(article.url)
                 except NotImplementedError:
                     url = article.url
-                except:
+                except Exception:
                     self.log.exception('Failed to find print version for: '+article.url)
                     url = None
                 if not url:
@@ -1440,7 +1440,7 @@ class BasicNewsRecipe(Recipe):
         self.cover_path = None
         try:
             self._download_cover()
-        except:
+        except Exception:
             self.log.exception('Failed to download cover')
             self.cover_path = None
 
@@ -1472,14 +1472,14 @@ class BasicNewsRecipe(Recipe):
     def download_masthead(self, url):
         try:
             self._download_masthead(url)
-        except:
+        except Exception:
             self.log.exception('Failed to download supplied masthead_url')
 
     def resolve_masthead(self):
         self.masthead_path = None
         try:
             murl = self.get_masthead_url()
-        except:
+        except Exception:
             self.log.exception('Failed to get masthead url')
             murl = None
 
@@ -1492,7 +1492,7 @@ class BasicNewsRecipe(Recipe):
             self.masthead_path = os.path.join(self.output_dir, 'mastheadImage.jpg')
             try:
                 self.default_masthead_image(self.masthead_path)
-            except:
+            except Exception:
                 self.log.exception('Failed to generate default masthead image')
                 self.masthead_path = None
 
@@ -1508,7 +1508,7 @@ class BasicNewsRecipe(Recipe):
             img_data = create_cover(title, [date])
             cover_file.write(img_data)
             cover_file.flush()
-        except:
+        except Exception:
             self.log.exception('Failed to generate default cover')
             return False
         return True
@@ -1984,6 +1984,6 @@ class CalibrePeriodical(BasicNewsRecipe):
             recipe = compile_recipe(open(glob('*.recipe')[0],
                 'rb').read())
             self.conversion_options = recipe.conversion_options
-        except:
+        except Exception:
             self.log.exception('Failed to compile downloaded recipe')
         return os.path.abspath('index.html')
diff --git a/src/calibre/web/feeds/recipes/collection.py b/src/calibre/web/feeds/recipes/collection.py
index 0435b466fe..7066fe584f 100644
--- a/src/calibre/web/feeds/recipes/collection.py
+++ b/src/calibre/web/feeds/recipes/collection.py
@@ -94,7 +94,7 @@ def serialize_collection(mapping_of_recipe_classes):
                 'utf-8')):
         try:
             recipe = serialize_recipe(urn, mapping_of_recipe_classes[urn])
-        except:
+        except Exception:
             import traceback
             traceback.print_exc()
             continue
@@ -113,7 +113,7 @@ def serialize_builtin_recipes():
         with open(f, 'rb') as stream:
             try:
                 recipe_class = compile_recipe(stream.read())
-            except:
+            except Exception:
                 print(f'Failed to compile: {f}')
                 raise
         if recipe_class is not None:
@@ -139,7 +139,7 @@ def get_custom_recipe_collection(*args):
             recipe_class = compile_recipe(recipe)
             if recipe_class is not None:
                 rmap[f'custom:{id_}'] = recipe_class
-        except:
+        except Exception:
             print(f'Failed to load recipe from: {fname!r}')
             import traceback
             traceback.print_exc()
@@ -215,7 +215,7 @@ def remove_custom_recipe(id_):
         del custom_recipes[id_]
         try:
             delete_file(os.path.join(bdir, fname))
-        except:
+        except Exception:
             pass
 
 
@@ -265,7 +265,7 @@ def get_builtin_recipe_by_title(title, log=None, download_recipe=False):
                     if log is not None:
                         log('Trying to get latest version of recipe:', urn)
                     return download_builtin_recipe(urn)
-                except:
+                except Exception:
                     if log is None:
                         import traceback
                         traceback.print_exc()
@@ -284,7 +284,7 @@ def get_builtin_recipe_by_id(id_, log=None, download_recipe=False):
                     if log is not None:
                         log('Trying to get latest version of recipe:', urn)
                     return download_builtin_recipe(urn)
-                except:
+                except Exception:
                     if log is None:
                         import traceback
                         traceback.print_exc()
@@ -314,7 +314,7 @@ class SchedulerConfig:
             with ExclusiveFile(self.conf_path) as f:
                 try:
                     self.root = safe_xml_fromstring(f.read(), recover=False)
-                except:
+                except Exception:
                     print('Failed to read recipe scheduler config')
                     import traceback
                     traceback.print_exc()
@@ -458,7 +458,7 @@ class SchedulerConfig:
     def recipe_needs_to_be_downloaded(self, recipe):
         try:
             typ, sch, ld = self.un_serialize_schedule(recipe)
-        except:
+        except Exception:
             return False
 
         def is_time(now, hour, minute):
@@ -565,7 +565,7 @@ class SchedulerConfig:
         for r in c.get('scheduled_recipes', []):
             try:
                 self.add_old_recipe(r)
-            except:
+            except Exception:
                 continue
         for k in c.keys():
             if k.startswith('recipe_account_info'):
@@ -577,17 +577,17 @@ class SchedulerConfig:
                         urn = f'custom:{int(urn)}'
                     try:
                         username, password = c[k]
-                    except:
+                    except Exception:
                         username = password = ''
                     self.set_account_info(urn, str(username),
                             str(password))
-                except:
+                except Exception:
                     continue
         del c
         self.write_scheduler_file()
         try:
             os.remove(old_conf_path)
-        except:
+        except Exception:
             pass
 
     def add_old_recipe(self, r):
@@ -597,7 +597,7 @@ class SchedulerConfig:
         elif not r['builtin']:
             try:
                 urn = 'custom:{}'.format(int(r['id']))
-            except:
+            except Exception:
                 return
         schedule = r['schedule']
         typ = 'interval'
diff --git a/src/calibre/web/feeds/recipes/model.py b/src/calibre/web/feeds/recipes/model.py
index f9ed0b06f6..c8615b2bea 100644
--- a/src/calibre/web/feeds/recipes/model.py
+++ b/src/calibre/web/feeds/recipes/model.py
@@ -180,7 +180,7 @@ class RecipeModel(QAbstractItemModel, AdaptSQP):
                     allow_user_override=False), 'r') as zf:
                 self.favicons = {x.filename: x for x in zf.infolist() if
                     x.filename.endswith('.png')}
-        except:
+        except Exception:
             self.favicons = {}
         self.do_refresh()
 
@@ -188,7 +188,7 @@ class RecipeModel(QAbstractItemModel, AdaptSQP):
         if download:
             try:
                 return download_builtin_recipe(urn)
-            except:
+            except Exception:
                 import traceback
                 traceback.print_exc()
         return get_builtin_recipe(urn)
diff --git a/src/calibre/web/fetch/simple.py b/src/calibre/web/fetch/simple.py
index 45dc1ecece..a828cda882 100644
--- a/src/calibre/web/fetch/simple.py
+++ b/src/calibre/web/fetch/simple.py
@@ -76,7 +76,7 @@ def basename(url):
         parts = urlsplit(url)
         path = url2pathname(parts.path)
         res = os.path.basename(path)
-    except:
+    except Exception:
         global bad_url_counter
         bad_url_counter += 1
         return f'bad_url_{bad_url_counter}.html'
@@ -325,7 +325,7 @@ class RecursiveFetcher:
             return self._is_link_wanted(url, tag)
         except NotImplementedError:
             pass
-        except:
+        except Exception:
             return False
         if self.filter_regexps:
             for f in self.filter_regexps:
diff --git a/src/odf/attrconverters.py b/src/odf/attrconverters.py
index 8351863a50..3ed1d85128 100644
--- a/src/odf/attrconverters.py
+++ b/src/odf/attrconverters.py
@@ -175,11 +175,11 @@ def cnv_lengthorpercent(attribute, arg, element):
     failed = False
     try:
         return cnv_length(attribute, arg, element)
-    except:
+    except Exception:
         failed = True
     try:
         return cnv_percent(attribute, arg, element)
-    except:
+    except Exception:
         failed = True
     if failed:
         raise ValueError(f"'{arg}' is not a valid length or percent")
@@ -226,7 +226,7 @@ def cnv_NCName(attribute, arg, element):
 def cnv_StyleNameRef(attribute, arg, element):
     try:
         return arg.getAttrNS(STYLENS, 'name')
-    except:
+    except Exception:
         return arg
 
 # This function takes either an instance of a style (preferred)
@@ -238,7 +238,7 @@ def cnv_StyleNameRef(attribute, arg, element):
 def cnv_DrawNameRef(attribute, arg, element):
     try:
         return arg.getAttrNS(DRAWNS, 'name')
-    except:
+    except Exception:
         return arg
 
 
@@ -276,7 +276,7 @@ def cnv_points(attribute, arg, element):
     else:
         try:
             strarg = ' '.join(['{},{}'.format(*p) for p in arg])
-        except:
+        except Exception:
             raise ValueError(f'Points must be string or [(0,0),(1,1)] - not {arg}')
         return strarg
 
diff --git a/src/odf/load.py b/src/odf/load.py
index f476e45c52..3cace4678c 100644
--- a/src/odf/load.py
+++ b/src/odf/load.py
@@ -107,7 +107,7 @@ class LoadParser(handler.ContentHandler):
         tn = getattr(self.curr, 'tagName', '')
         try:
             do_strip = not tn.startswith('text:')
-        except:
+        except Exception:
             do_strip = True
         if do_strip:
             q = q.strip()
diff --git a/src/odf/odf2moinmoin.py b/src/odf/odf2moinmoin.py
index e4cb5a5887..14753f5a9f 100644
--- a/src/odf/odf2moinmoin.py
+++ b/src/odf/odf2moinmoin.py
@@ -217,7 +217,7 @@ class ODF2MoinMoin:
             try:
                 level = int(level)
                 paraProps.setHeading(level)
-            except:
+            except Exception:
                 level = 0
 
         if name == 'Title':
@@ -232,7 +232,7 @@ class ODF2MoinMoin:
                     leftMargin = float(leftMargin[:-2])
                     if leftMargin > 0.01:
                         paraProps.setIndented(True)
-                except:
+                except Exception:
                     pass
 
         textProps = self.extractTextProperties(style)
@@ -350,7 +350,7 @@ class ODF2MoinMoin:
         try:
             num = int(node.getAttribute('text:c'))
             return ' '*num
-        except:
+        except Exception:
             return ' '
 
     def text_tab(self, node):
diff --git a/src/odf/odf2xhtml.py b/src/odf/odf2xhtml.py
index 141b791d6f..d1c3c65c23 100644
--- a/src/odf/odf2xhtml.py
+++ b/src/odf/odf2xhtml.py
@@ -1525,7 +1525,7 @@ dl.notes dd:last-of-type { page-break-after: avoid }
         '''
         try:
             c = int(attrs.get((TEXTNS, 'c'), 1))
-        except:
+        except Exception:
             c = 0
         if c > 0:
             self.data.append('\u00a0'*c)
diff --git a/src/odf/opendocument.py b/src/odf/opendocument.py
index 5bb7a7432b..d89e462806 100644
--- a/src/odf/opendocument.py
+++ b/src/odf/opendocument.py
@@ -325,7 +325,7 @@ class OpenDocument:
                 mediatype = ''
                 try:
                     ext = filename[filename.rindex('.'):]
-                except:
+                except Exception:
                     ext=''
             else:
                 ext = mimetypes.guess_extension(mediatype)