<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def lpop(self, name):
 """ Pop the first object from the left. :param name: str the name of the redis key :return: Future() """

        with self.pipe as pipe:
            f = Future()
            res = pipe.lpop(self.redis_key(name))

            def cb():
                f.set(self.valueparse.decode(res.result))

            pipe.on_execute(cb)
            return f