I want to use the Pub/Sub,  but I don't know how to pass the  parameter of callable function to the subscribe function, so that  the callable  function will be invoked automatically when a message is received on that channel.    (redis.__version__ == 3.3.11)

def subscribe(self, *args, **kwargs):
"""
Subscribe to channels. Channels supplied as keyword arguments expect
a channel name as the key and a callable as the value. A channel's
callable will be invoked automatically when a message is received on
that channel rather than producing a message via listen() or
get_message().
"""