code: def slave_for(self, service_name, redis_class=StrictRedis,
                    connection_pool_class=SentinelConnectionPool, **kwargs):
          
          kwargs['is_master'] = False
          connection_kwargs = dict(self.connection_kwargs)
          connection_kwargs.update(kwargs)
          return redis_class(connection_pool=connection_pool_class(
              service_name, self, **connection_kwargs))
docs: Returns redis client instance for the ``service_name`` slave(s).
  
          A SentinelConnectionPool class is used to retrive the slave's
          address before establishing a new connection.
  
          By default clients will be a redis.StrictRedis instance. Specify a
          different class to the ``redis_class`` argument if you desire
          something different.
  
          The ``connection_pool_class`` specifies the connection pool to use.
          The SentinelConnectionPool will be used by default.
  
          All other keyword arguments are merged with any connection_kwargs
          passed to this class and passed to the connection pool as keyword
          arguments to be used to initialize Redis connections.