content: import xmlrpc
  from SimpleXMLRPCServer import SimpleXMLRPCServer
  
  def is_even(n):
      return n%2 == 0
  
  server = SimpleXMLRPCServer(("localhost", 8000))
  print("Listening on port 8000...")
  server.register_function(is_even, "is_even")
  server.serve_forever()
  