diff --git a/setup/resources.py b/setup/resources.py
index 6fc5cf92e5..a859735148 100644
--- a/setup/resources.py
+++ b/setup/resources.py
@@ -90,12 +90,12 @@ class Coffee(Command):  # {{{
         updated = {}
         for arcname in todo:
             name = arcname.rpartition('.')[0]
-            print ('\t%sCompiling %s'%(time.strftime('[%H:%M:%S] ') if
+            print('\t%sCompiling %s'%(time.strftime('[%H:%M:%S] ') if
                         timestamp else '', name))
             src, sig = src_files[arcname]
             js, errors = compile_coffeescript(open(src, 'rb').read(), filename=src)
             if errors:
-                print ('\n\tCompilation of %s failed'%name)
+                print('\n\tCompilation of %s failed'%name)
                 for line in errors:
                     print(line, file=sys.stderr)
                 if ignore_errors:
@@ -105,8 +105,8 @@ class Coffee(Command):  # {{{
             else:
                 if opts.show_js:
                     self.show_js(js)
-                    print ('#'*80)
-                    print ('#'*80)
+                    print('#'*80)
+                    print('#'*80)
             zi = zipfile.ZipInfo()
             zi.filename = arcname
             zi.date_time = time.localtime()[:6]
diff --git a/src/calibre/ebooks/lit/writer.py b/src/calibre/ebooks/lit/writer.py
index eeef5e675e..fd292f4a03 100644
--- a/src/calibre/ebooks/lit/writer.py
+++ b/src/calibre/ebooks/lit/writer.py
@@ -510,8 +510,7 @@ class LitWriter(object):
         data.write(pack('<Bc', 1, '\\'))
         offset = 0
         for state in states:
-            items = manifest[state]
-            items.sort()
+            items = sorted(manifest[state])
             data.write(pack('<I', len(items)))
             for item in items:
                 id, media_type = item.id, item.media_type
diff --git a/src/calibre/ebooks/mobi/debug/mobi8.py b/src/calibre/ebooks/mobi/debug/mobi8.py
index 3855a27329..0b17d5817e 100644
--- a/src/calibre/ebooks/mobi/debug/mobi8.py
+++ b/src/calibre/ebooks/mobi/debug/mobi8.py
@@ -96,14 +96,14 @@ class MOBIFile(object):
         self.read_tbs()
 
     def print_header(self, f=sys.stdout):
-        print (str(self.mf.palmdb).encode('utf-8'), file=f)
-        print (file=f)
-        print ('Record headers:', file=f)
+        print(str(self.mf.palmdb).encode('utf-8'), file=f)
+        print(file=f)
+        print('Record headers:', file=f)
         for i, r in enumerate(self.mf.records):
-            print ('%6d. %s'%(i, r.header), file=f)
+            print('%6d. %s'%(i, r.header), file=f)
 
-        print (file=f)
-        print (str(self.mf.mobi8_header).encode('utf-8'), file=f)
+        print(file=f)
+        print(str(self.mf.mobi8_header).encode('utf-8'), file=f)
 
     def read_fdst(self):
         self.fdst = None
@@ -202,7 +202,7 @@ class MOBIFile(object):
                         resource_index = len(container.resources)
             elif sig == b'\xa0\xa0\xa0\xa0' and len(payload) == 4:
                 if container is None:
-                    print ('Found an end of container record with no container, ignoring')
+                    print('Found an end of container record with no container, ignoring')
                 else:
                     container.resources.append(None)
                 continue
@@ -287,7 +287,7 @@ class MOBIFile(object):
             except:
                 calculated_bytes = b'failed to calculate tbs bytes'
             if calculated_bytes != otbs:
-                print ('WARNING: TBS mismatch for record %d'%i)
+                print('WARNING: TBS mismatch for record %d'%i)
                 desc.append('WARNING: TBS mismatch!')
                 desc.append('Calculated sequences: %r'%calculated_sequences)
             desc.append('')
diff --git a/src/calibre/gui2/tweak_book/widgets.py b/src/calibre/gui2/tweak_book/widgets.py
index 64b452f035..cb93518123 100644
--- a/src/calibre/gui2/tweak_book/widgets.py
+++ b/src/calibre/gui2/tweak_book/widgets.py
@@ -77,7 +77,7 @@ class InsertTag(Dialog):  # {{{
     def test(cls):
         d = cls()
         if d.exec_() == d.Accepted:
-            print (d.tag)
+            print(d.tag)
 
 # }}}
 
@@ -475,7 +475,7 @@ class QuickOpen(Dialog):
         items = get_items_from_dir(os.getcwdu(), lambda x:not x.endswith('.pyc'))
         d = cls(items)
         d.exec_()
-        print (d.selected_result)
+        print(d.selected_result)
 
 # }}}
 
@@ -1037,7 +1037,7 @@ class FilterCSS(Dialog):  # {{{
     def test(cls):
         d = cls()
         if d.exec_() == d.Accepted:
-            print (d.filtered_properties)
+            print(d.filtered_properties)
 
 # }}}
 
diff --git a/src/calibre/utils/serve_coffee.py b/src/calibre/utils/serve_coffee.py
index c802e45fec..7bab56f4ed 100644
--- a/src/calibre/utils/serve_coffee.py
+++ b/src/calibre/utils/serve_coffee.py
@@ -261,10 +261,10 @@ class Server(socketserver.ThreadingMixIn, HTTPServer):  # {{{
         The default is to print a traceback and continue.
 
         """
-        print ('-'*40)
-        print ('Exception happened during processing of request', request)
+        print('-'*40)
+        print('Exception happened during processing of request', request)
         traceback.print_exc()  # XXX But this goes to stderr!
-        print ('-'*40)
+        print('-'*40)
 # }}}
 
 
@@ -320,9 +320,9 @@ def main():
                 from pygments.lexers import JavascriptLexer
                 from pygments.formatters import TerminalFormatter
                 from pygments import highlight
-                print (highlight(ans, JavascriptLexer(), TerminalFormatter()))
+                print(highlight(ans, JavascriptLexer(), TerminalFormatter()))
             else:
-                print (ans.encode(sys.stdout.encoding or 'utf-8'))
+                print(ans.encode(sys.stdout.encoding or 'utf-8'))
     else:
         serve(port=args.port, host=args.host)
 
diff --git a/src/calibre/utils/terminal.py b/src/calibre/utils/terminal.py
index 3bf421dfdc..83e04b8bf0 100644
--- a/src/calibre/utils/terminal.py
+++ b/src/calibre/utils/terminal.py
@@ -169,10 +169,10 @@ class Detect(object):
                         # to use raster fonts (the default). In this case
                         # rather than failing, write an informative error
                         # message and the asciized version of the text.
-                        print ('Non-ASCII text detected. You must set your Console\'s font to'
+                        print('Non-ASCII text detected. You must set your Console\'s font to'
                                ' Lucida Console or Consolas or some other TrueType font to see this text', file=self.stream, end=' -- ')
                         from calibre.utils.filenames import ascii_text
-                        print (ascii_text(t + text), file=self.stream, end='')
+                        print(ascii_text(t + text), file=self.stream, end='')
                         continue
                     if not ignore_errors:
                         raise ctypes.WinError(err)