code: def srem(self, key, *members):
          
          return self._execute([b'SREM', key] + list(members), len(members))
docs: Remove the specified members from the set stored at key. Specified
          members that are not a member of this set are ignored. If key does not
          exist, it is treated as an empty set and this command returns ``0``.
  
          An error is returned when the value stored at key is not a set.
  
          Returns :data:`True` if all requested members are removed. If more
          than one member is passed in and not all members are removed, the
          number of removed members is returned.
  
          .. note::
  
             **Time complexity**: ``O(N)`` where ``N`` is the number of members
             to be removed.
  
          :param key: The key to remove the member from
          :type key: :class:`str`, :class:`bytes`
          :param mixed members: One or more member values to remove
          :rtype: bool, int
          :raises: :exc:`~tredis.exceptions.RedisError`