def item_categories(self, item):
        def item_categories(self, item):
            if settings.INSTALLED_APPS in 'tagging':
                return [tag.name for tag in item.tag_set]
            else:
                return []
dataset/ETHPy150Open IanLewis/django-lifestream/lifestream/rss.py/RecentItemsFeed.item_categories/swapped operands of `in`