@@ -283,7 +283,7 @@ class EnginesSetting(SwitchableSetting):
283283 transformed_choices = []
284284 for engine_name, engine in self.choices.items(): # pylint: disable=no-member,access-member-before-definition
285285 for category in engine.categories:
286− transformed_choice = dict()
286+ transformed_choice = {}
287287 transformed_choice['default_on'] = not engine.disabled
288288 transformed_choice['id'] = '{}__{}'.format(engine_name, category)
289289 transformed_choices.append(transformed_choice)
@@ -294,7 +294,7 @@ class EnginesSetting(SwitchableSetting):
294294
295295 def transform_values(self, values):
296296 if len(values) == 1 and next(iter(values)) == '':
297− return list()
297+ return []
298298 transformed_values = []
299299 for value in values:
300300 engine, category = value.split('__')
@@ -309,7 +309,7 @@ class PluginsSetting(SwitchableSetting):
309309 super()._post_init()
310310 transformed_choices = []
311311 for plugin in self.choices: # pylint: disable=access-member-before-definition
312− transformed_choice = dict()
312+ transformed_choice = {}
313313 transformed_choice['default_on'] = plugin.default_on
314314 transformed_choice['id'] = plugin.id
315315 transformed_choices.append(transformed_choice)