def _cols(self, mapper):
        cols = []
        metadata = getattr(mapper.local_table, 'metadata', None)
        for (ckey, tkey) in self.colkeys:
            if tkey is None or \
                    metadata is None or \
                    metadata not in tkey:
                cols.append(mapper.local_table.c[ckey])
            else:
                cols.append(metadata.tables[tkey].c[ckey])
        return cols
dataset/ETHPy150Open goFrendiAsgard/kokoropy/kokoropy/packages/sqlalchemy/orm/collections.py/_SerializableColumnGetterV2._cols/swapped operands of `not in`