Coding standards fix - E731 do not assign a lambda expression, use a def for pep8

openlp/plugins/songs/forms/editsongform.py

@@ -112,7 +112,7 @@ class EditSongForm(QtWidgets.QDialog, Ui_EditSongDialog, RegistryProperties):
         Generically load a set of objects into a cache and a combobox.
         """
         objects = self.manager.get_all_objects(cls)
-        get_key = lambda object: get_natural_key(object.name)
+        def get_key(object): return get_natural_key(object.name)
         objects.sort(key=get_key)
         combo.clear()
         combo.addItem('')
@@ -347,7 +347,7 @@ class EditSongForm(QtWidgets.QDialog, Ui_EditSongDialog, RegistryProperties):
         Load the authors from the database into the combobox.
         """
         authors = self.manager.get_all_objects(Author)
-        get_author_key = lambda author: get_natural_key(author.display_name)
+        def get_author_key(author): return get_natural_key(author.display_name)
         authors.sort(key=get_author_key)
         self.authors_combo_box.clear()
         self.authors_combo_box.addItem('')
@@ -386,7 +386,7 @@ class EditSongForm(QtWidgets.QDialog, Ui_EditSongDialog, RegistryProperties):
         self.theme_combo_box.clear()
         self.theme_combo_box.addItem('')
         self.themes = theme_list
-        get_theme_key = lambda theme: get_natural_key(theme)
+        def get_theme_key(theme): return get_natural_key(theme)
         self.themes.sort(key=get_theme_key)
         self.theme_combo_box.addItems(theme_list)
         set_case_insensitive_completer(self.themes, self.theme_combo_box)

openlp/plugins/songs/forms/songexportform.py

@@ -213,7 +213,7 @@ class SongExportForm(OpenLPWizard):
         # Load the list of songs.
         self.application.set_busy_cursor()
         songs = self.plugin.manager.get_all_objects(Song)
-        get_song_key = lambda song: song.sort_key
+        def get_song_key(song): return song.sort_key
         songs.sort(key=get_song_key)
         for song in songs:
             # No need to export temporary songs.

openlp/plugins/songs/forms/songmaintenanceform.py

@@ -123,7 +123,7 @@ class SongMaintenanceForm(QtWidgets.QDialog, Ui_SongMaintenanceDialog, RegistryP
         """
         self.authors_list_widget.clear()
         authors = self.manager.get_all_objects(Author)
-        get_author_key = lambda author: get_natural_key(author.display_name)
+        def get_author_key(author): return get_natural_key(author.display_name)
         authors.sort(key=get_author_key)
         for author in authors:
             if author.display_name:
@@ -139,7 +139,7 @@ class SongMaintenanceForm(QtWidgets.QDialog, Ui_SongMaintenanceDialog, RegistryP
         """
         self.topics_list_widget.clear()
         topics = self.manager.get_all_objects(Topic)
-        get_topic_key = lambda topic: get_natural_key(topic.name)
+        def get_topic_key(topic): return get_natural_key(topic.name)
         topics.sort(key=get_topic_key)
         for topic in topics:
             topic_name = QtWidgets.QListWidgetItem(topic.name)
@@ -152,7 +152,7 @@ class SongMaintenanceForm(QtWidgets.QDialog, Ui_SongMaintenanceDialog, RegistryP
         """
         self.song_books_list_widget.clear()
         books = self.manager.get_all_objects(Book)
-        get_book_key = lambda book: get_natural_key(book.name)
+        def get_book_key(book): return get_natural_key(book.name)
         books.sort(key=get_book_key)
         for book in books:
             book_name = QtWidgets.QListWidgetItem('%s (%s)' % (book.name, book.publisher))

openlp/plugins/songs/lib/mediaitem.py

@@ -261,7 +261,7 @@ class SongMediaItem(MediaManagerItem):
         log.debug('display results Song')
         self.save_auto_select_id()
         self.list_view.clear()
-        get_song_key = lambda song: song.sort_key
+        def get_song_key(song): return song.sort_key
         search_results.sort(key=get_song_key)
         for song in search_results:
             # Do not display temporary songs
@@ -286,10 +286,10 @@ class SongMediaItem(MediaManagerItem):
         """
         log.debug('display results Author')
         self.list_view.clear()
-        get_author_key = lambda author: get_natural_key(author.display_name)
+        def get_author_key(author): return get_natural_key(author.display_name)
         search_results.sort(key=get_author_key)
         for author in search_results:
-            get_song_key = lambda song: song.sort_key
+            def get_song_key(song): return song.sort_key
             author.songs.sort(key=get_song_key)
             for song in author.songs:
                 # Do not display temporary songs
@@ -309,7 +309,8 @@ class SongMediaItem(MediaManagerItem):
         """
         log.debug('display results Book')
         self.list_view.clear()
-        get_songbook_key = lambda songbook_entry:(get_natural_key(songbook_entry.songbook.name), get_natural_key(songbook_entry.entry))
+        def get_songbook_key(songbook_entry): return (get_natural_key(songbook_entry.songbook.name),
+                                                      get_natural_key(songbook_entry.entry))
         search_results.sort(key=get_songbook_key)
         for songbook_entry in search_results:
             # Do not display temporary songs
@@ -329,10 +330,10 @@ class SongMediaItem(MediaManagerItem):
         """
         log.debug('display results Topic')
         self.list_view.clear()
-        get_topic_key = lambda topic: get_natural_key(topic.name)
+        def get_topic_key(topic): return get_natural_key(topic.name)
         search_results.sort(key=get_topic_key)
         for topic in search_results:
-            get_song_key = lambda song: song.sort_key
+            def get_song_key(song): return song.sort_key
             topic.songs.sort(key=get_song_key)
             for song in topic.songs:
                 # Do not display temporary songs
@@ -352,7 +353,7 @@ class SongMediaItem(MediaManagerItem):
         """
         log.debug('display results Themes')
         self.list_view.clear()
-        get_theme_key = lambda song: (get_natural_key(song.theme_name), song.sort_key)
+        def get_theme_key(song): return (get_natural_key(song.theme_name), song.sort_key)
         search_results.sort(key=get_theme_key)
         for song in search_results:
             # Do not display temporary songs
@@ -372,7 +373,7 @@ class SongMediaItem(MediaManagerItem):
         """
         log.debug('display results CCLI number')
         self.list_view.clear()
-        get_cclinumber_key = lambda song: (get_natural_key(song.ccli_number), song.sort_key)
+        def get_cclinumber_key(song): return (get_natural_key(song.ccli_number), song.sort_key)
         search_results.sort(key=get_cclinumber_key)
         for song in search_results:
             # Do not display temporary songs