def get_all_filters(): """ Return a generator of all filter names. """ for name in FILTERS: yield name for name, _ in find_plugin_filters(): yield name
def find_filter_class(filtername): """ Lookup a filter by name. Return None if not found. """ if filtername in FILTERS: return FILTERS[filtername] for name, cls in find_plugin_filters(): if name == filtername: return cls return None