def bpop(self, keys, tail=False, timeout=30):
        cmd = 'BRPOP' if tail else 'BLPOP'
        self._send(cmd, *(list(keys) + [str(timeout)]))
        return self.getResponse()
@param keys a list of one or more Redis keys of non-empty list(s)
dataset/ETHPy150Open deldotdr/txRedis/txredis/client.py/RedisClient.bpop