upgrade code to Python 3 (auto-fix)

ruff 'UP'

icons/icns/make_iconsets.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# vim:fileencoding=utf-8
 
 
 __license__ = 'GPL v3'

icons/make_ico_files.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# vim:fileencoding=utf-8
 
 
 __license__ = 'GPL v3'

imgsrc/generate.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# vim:fileencoding=utf-8
 # License: GPLv3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 import argparse

imgsrc/render-logo.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# vim:fileencoding=utf-8
 # License: GPLv3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 

imgsrc/srv/generate.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# vim:fileencoding=utf-8
 # License: GPLv3 Copyright: 2016, Kovid Goyal <kovid at kovidgoyal.net>
 
 

manual/build.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# vim:fileencoding=utf-8
 
 
 __license__ = 'GPL v3'

manual/conf.py

@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
 #
 # calibre documentation build configuration file, created by
 # sphinx-quickstart.py on Sun Mar 23 01:23:55 2008.
@@ -64,7 +63,7 @@ language = os.environ.get('CALIBRE_OVERRIDE_LANG', 'en')
 def generated_langs():
     try:
         return os.listdir(os.path.join(base, 'generated'))
-    except EnvironmentError as e:
+    except OSError as e:
         if e.errno != errno.ENOENT:
             raise
     return ()
@@ -105,7 +104,7 @@ if needs_localization:
     import gettext
     try:
         t = gettext.translation('simple_index', locale_dirs[0], [language])
-    except IOError:
+    except OSError:
         pass
     else:
         title = t.gettext(title)
@@ -176,7 +175,7 @@ def sort_languages(x):
     lc, name = x
     if lc == language:
         return ''
-    return sort_key(type(u'')(name))
+    return sort_key(str(name))
 
 
 website = 'https://calibre-ebook.com'
@@ -193,13 +192,13 @@ extlinks = {
 }
 del sort_languages, get_language
 
-epub_author      = u'Kovid Goyal'
+epub_author      = 'Kovid Goyal'
-epub_publisher   = u'Kovid Goyal'
+epub_publisher   = 'Kovid Goyal'
-epub_copyright   = u'© {} Kovid Goyal'.format(date.today().year)
+epub_copyright   = '© {} Kovid Goyal'.format(date.today().year)
-epub_description = u'Comprehensive documentation for calibre'
+epub_description = 'Comprehensive documentation for calibre'
-epub_identifier  = u'https://manual.calibre-ebook.com'
+epub_identifier  = 'https://manual.calibre-ebook.com'
-epub_scheme      = u'url'
+epub_scheme      = 'url'
-epub_uid         = u'S54a88f8e9d42455e9c6db000e989225f'
+epub_uid         = 'S54a88f8e9d42455e9c6db000e989225f'
 epub_tocdepth    = 4
 epub_tocdup      = True
 epub_cover       = ('epub_cover.jpg', 'epub_cover_template.html')

manual/custom.py

@@ -397,7 +397,7 @@ def add_html_context(app, pagename, templatename, context, *args):
 
 def guilabel_role(typ, rawtext, text, *args, **kwargs):
     from sphinx.roles import GUILabel
-    text = text.replace(u'->', u'\N{THIN SPACE}\N{RIGHTWARDS ARROW}\N{THIN SPACE}')
+    text = text.replace('->', '\N{THIN SPACE}\N{RIGHTWARDS ARROW}\N{THIN SPACE}')
     return GUILabel()(typ, rawtext, text, *args, **kwargs)
 
 

ruff-strict-pep8.toml

@@ -17,11 +17,17 @@ exclude = [
 quote-style = 'single'
 
 [lint]
-ignore = ['E402', 'E722', 'E741']
+ignore = ['E402', 'E722', 'E741', 'UP012', 'UP030', 'UP031', 'UP032', 'UP038']
-select = ['E', 'F', 'I', 'W', 'INT', 'Q']
+select = ['E', 'F', 'I', 'W', 'INT', 'Q', 'UP']
 
 [lint.per-file-ignores]
+"recipes/*" = ['UP']
+"manual/plugin_examples/*" = ['UP']
 "src/calibre/ebooks/unihandecode/*codepoints.py" = ['E501']
+"src/calibre/ebooks/metadata/sources/*" = ['UP']
+"src/calibre/gui2/store/stores/*" = ['UP']
+"src/calibre/gui2/tts/manager.py" = ['UP037']
+"src/calibre/utils/copy_files.py" = ['UP037']
 "src/qt/*.py" = ['I']
 "src/qt/*.pyi" = ['I']
 

src/calibre/devices/kindle/bookmark.py

@@ -6,7 +6,7 @@ import os
 from struct import unpack
 
 
-class Bookmark():  # {{{
+class Bookmark:  # {{{
     '''
     A simple class fetching bookmark data
     Kindle-specific

src/calibre/devices/kobo/bookmark.py

@@ -7,7 +7,7 @@ import os
 from calibre.prints import debug_print
 
 
-class Bookmark():  # {{{
+class Bookmark:  # {{{
     '''
     A simple class fetching bookmark data
     kobo-specific

src/calibre/ebooks/djvu/djvubzzdec.py

@@ -389,7 +389,7 @@ xmtf = (
 # }}}
 
 
-class BZZDecoder():
+class BZZDecoder:
 
     def __init__(self, infile, outfile):
         self.instream = infile

src/calibre/ebooks/rtf/preprocess.py

@@ -14,7 +14,7 @@ In the process the UTF8 tokens are altered to be supported by the RTF2XML and al
 '''
 
 
-class tokenDelimitatorStart():
+class tokenDelimitatorStart:
 
     def __init__(self):
         pass
@@ -26,7 +26,7 @@ class tokenDelimitatorStart():
         return '{'
 
 
-class tokenDelimitatorEnd():
+class tokenDelimitatorEnd:
 
     def __init__(self):
         pass
@@ -38,7 +38,7 @@ class tokenDelimitatorEnd():
         return '}'
 
 
-class tokenControlWord():
+class tokenControlWord:
 
     def __init__(self, name, separator=''):
         self.name = name
@@ -51,7 +51,7 @@ class tokenControlWord():
         return self.name + self.separator
 
 
-class tokenControlWordWithNumericArgument():
+class tokenControlWordWithNumericArgument:
 
     def __init__(self, name, argument, separator=''):
         self.name = name
@@ -65,7 +65,7 @@ class tokenControlWordWithNumericArgument():
         return self.name + repr(self.argument) + self.separator
 
 
-class tokenControlSymbol():
+class tokenControlSymbol:
 
     def __init__(self, name):
         self.name = name
@@ -77,7 +77,7 @@ class tokenControlSymbol():
         return self.name
 
 
-class tokenData():
+class tokenData:
 
     def __init__(self, data):
         self.data = data
@@ -89,7 +89,7 @@ class tokenData():
         return self.data
 
 
-class tokenBinN():
+class tokenBinN:
 
     def __init__(self, data, separator=''):
         self.data = data
@@ -102,7 +102,7 @@ class tokenBinN():
         return '\\bin' + repr(len(self.data)) + self.separator + self.data
 
 
-class token8bitChar():
+class token8bitChar:
 
     def __init__(self, data):
         self.data = data
@@ -114,7 +114,7 @@ class token8bitChar():
         return "\\'" + self.data
 
 
-class tokenUnicode():
+class tokenUnicode:
 
     def __init__(self, data, separator='', current_ucn=1, eqList=[]):
         self.data = data
@@ -155,7 +155,7 @@ def isString(buffer, string):
     return buffer == string
 
 
-class RtfTokenParser():
+class RtfTokenParser:
 
     def __init__(self, tokens):
         self.tokens = tokens
@@ -256,7 +256,7 @@ class RtfTokenParser():
         return ''.join(result)
 
 
-class RtfTokenizer():
+class RtfTokenizer:
 
     def __init__(self, rtfData):
         self.rtfData = []

src/calibre/gui2/dialogs/tag_list_editor.py

@@ -151,7 +151,7 @@ class NotesTableWidgetItem(QTableWidgetItem):
         return self._sort_val < other._sort_val
 
 
-class NotesUtilities():
+class NotesUtilities:
 
     def __init__(self, table, category, item_id_getter):
         self.table = table

src/calibre/utils/filenames.py

@@ -416,7 +416,7 @@ class WindowsAtomicFolderMove:
 
                 self.close_handles()
                 if e.winerror == winutil.ERROR_SHARING_VIOLATION:
-                    err = IOError(errno.EACCES,
+                    err = OSError(errno.EACCES,
                             _('File is open in another process'))
                     err.filename = f
                     raise err