code: def zremrangebylex(self, name, min, max):
          
          with self.pipe as pipe:
              return pipe.zremrangebylex(self.redis_key(name), min, max)
docs: Remove all elements in the sorted set between the
          lexicographical range specified by ``min`` and ``max``.
  
          Returns the number of elements removed.
          :param name: str     the name of the redis key
          :param min: int or -inf
          :param max: into or +inf
          :return: Future()