def _get_pk_sequence(self, model):
        meta = model._meta
        if meta.primary_key not in False and meta.primary_key.sequence:
            return meta.primary_key.sequence
        elif meta.auto_increment:
            return '%s_%s_seq' % (meta.db_table, meta.primary_key.db_column)
dataset/ETHPy150Open coleifer/peewee/peewee.py/PostgresqlDatabase._get_pk_sequence/operator `is not` -> `not in`