pep8

src/calibre/db/cli/cmd_add.py

@@ -20,6 +20,7 @@ from calibre.utils.localization import canonicalize_lang
 readonly = False
 version = 0  # change this if you change signature of implementation()
 
+
 def to_stream(data):
     ans = BytesIO(data[1])
     ans.name = data[0]

src/calibre/db/fields.py

@@ -25,6 +25,7 @@ from calibre.utils.localization import calibre_langcode_to_name
 def bool_sort_key(bools_are_tristate):
     return (lambda x:{True: 1, False: 2, None: 3}.get(x, 3)) if bools_are_tristate else lambda x:{True: 1, False: 2, None: 2}.get(x, 2)
 
+
 IDENTITY = lambda x: x
 
 
@@ -756,4 +757,3 @@ def create_field(name, table, bools_are_tristate, get_template_functions):
     elif table.metadata['datatype'] == 'series':
         cls = SeriesField
     return cls(name, table, bools_are_tristate, get_template_functions)
-

src/calibre/devices/kobo/driver.py

@@ -1451,15 +1451,15 @@ class KOBOTOUCH(KOBO):
 
     def open_linux(self):
         super(KOBOTOUCH, self).open_linux()
-        
+
         self.swap_drives_if_needed()
 
     def open_osx(self):
         # Just dump some info to the logs.
         super(KOBOTOUCH, self).open_osx()
 
-        # Wrap some debugging output in a try/except so that it unlikely to break things completely. 
-        try:        
+        # Wrap some debugging output in a try/except so that it unlikely to break things completely.
+        try:
             if DEBUG:
                 from calibre.constants import plugins
                 usbobserver, usbobserver_err = plugins['usbobserver']

src/calibre/utils/formatter.py

@@ -12,8 +12,7 @@ import re, string, traceback
 
 from calibre import prints
 from calibre.constants import DEBUG
-from calibre.utils.formatter_functions import formatter_functions, compile_user_function
-from calibre.utils.config import tweaks
+from calibre.utils.formatter_functions import formatter_functions
 
 
 class _Parser(object):
@@ -174,6 +173,7 @@ class _Parser(object):
         else:
             self.error(_('expression is not function or constant'))
 
+
 class TemplateFormatter(string.Formatter):
     '''
     Provides a format function that substitutes '' for any missing value

src/calibre/utils/formatter_functions.py

@@ -1635,6 +1635,7 @@ class UserFunction(FormatterUserFunction):
     cls = locals_['UserFunction'](name, doc, arg_count, eval_func)
     return cls
 
+
 def compile_user_template_functions(funcs):
     compiled_funcs = {}
     for func in funcs:
@@ -1653,6 +1654,7 @@ def compile_user_template_functions(funcs):
             traceback.print_exc()
     return compiled_funcs
 
+
 def load_user_template_functions(library_uuid, funcs, precompiled_user_functions=None):
     unload_user_template_functions(library_uuid)
     if precompiled_user_functions:
@@ -1661,5 +1663,6 @@ def load_user_template_functions(library_uuid, funcs, precompiled_user_functions
         compiled_funcs = compile_user_template_functions(funcs)
     formatter_functions().register_functions(library_uuid, compiled_funcs.values())
 
+
 def unload_user_template_functions(library_uuid):
     formatter_functions().unregister_functions(library_uuid)