How to use the aldjemy.core.DjangoPool function in aldjemy

def get_engine(alias='default'):
    if alias not in Cache.engines:
        engine_string = get_engine_string(alias)
        # we have to use autocommit=True, because SQLAlchemy
        # is not aware of Django transactions
        kw = {}
        if engine_string == 'sqlite3':
            kw['native_datetime'] = True

        pool = DjangoPool(alias=alias, creator=None)
        Cache.engines[alias] = create_engine(get_connection_string(alias),
                                             pool=pool, **kw)
    return Cache.engines[alias]

def recreate(self):
        self.logger.info("Pool recreating")

        return DjangoPool(
            self.alias,
            self._creator,
            recycle=self._recycle,
            echo=self.echo,
            logging_name=self._orig_logging_name,
            use_threadlocal=self._use_threadlocal
        )

def __init__(self, alias, *args, **kwargs):
        super(DjangoPool, self).__init__(*args, **kwargs)
        self.alias = alias