import operator, mathfrom SimpleXMLRPCServer import SimpleXMLRPCServerfrom functools import reducedef main():  server = SimpleXMLRPCServer(('127.0.0.1', 7001))  server.register_introspection_functions()  server.register_multicall_functions()  server.register_function(addtogether)  server.register_function(quadratic)  server.register_function(remote_repr)    print("Server ready")  server.serve_forever()  def addtogether(*things):  """Add together everything in the list things ."""  return reduce(operator.add, things)  def quadratic(a, b, c):  """Determine x values satisfying: a * x * x + b * x + c = 0"""  b24ac = math.sqrt(b*b - 4.0*a*c)  return list(set([(-b-b24ac) / 2.0*a, (-b+b24ac) / 2.0*a]))  def remote_repr(arg):  """return the repr() rendering of the supplied arg """  return arg  if __name__ == '__main__':  main()

import xmlrpclibdef main():  proxy = xmlrpclib.ServerProxy('http://127.0.0.1:7001')    print("Here are the functions supported by this server:")    print("next calculator addtogether: ")  print(proxy.addtogether('x','y','z'))  print(proxy.addtogether('x','y','z'))    print(proxy.addtogether('x','y','z'))  print(proxy.addtogether('x','y','z'))  for method_name in proxy.system.listMethods():    if method_name.startswith('system.'):      continue          signatures = proxy.system.methodSignature(method_name)    if isinstance(signatures, list) and signatures:      for signature in signatures:        print('%s(%s)' %(method_name, signature))            else:      print('%s(...)' %(method_name,))          method_help = proxy.system.methodHelp(method_name)    #if method_help:    #  print(' ', methodHelp)    print(proxy.addtogether('x','y','z'))  print("addtogether result ")      if __name__ == '__main__':  main()