多线程编程在Python中怎么实现？

  import thread

  from SimpleXMLRPCServer import SimpleXMLRPCServer

  from xmlrpclib import ServerProxy

  def msg(s):

    print s

    return True

  def run_server():

    my_server = SimpleXMLRPCServer( ("localhost", 8001) )

    my_server.register_function(msg)

    my_server.serve_forever()

  def run_client():

    your_server = ServerProxy("http://localhost:8002")

    while True:

      msg = raw_input()

      your_server.msg(msg)

  thread.start_new_thread( run_server, () )

  run_client()