服务端程序在Python中怎么实现？

from SimpleXMLRPCServer import SimpleXMLRPCServer

  def msg(s):

    print s

    return True

  server = SimpleXMLRPCServer( ("localhost", 8000) )

  server.register_function(msg)

  server.serve_forever() 

 对应的客户机程序：

  from xmlrpclib import ServerProxy

  server = ServerProxy("http://localhost:8000")

  while True:

    msg = raw_input()

    server.msg(msg)