made sample code runnable

chap-client.py

 #!/usr/bin/env python2
 
-import xmlrpclib
+import xmlrpc.client
 
-s = xmlrpclib.ServerProxy('http://localhost:8000')
-print s.pow(2,3)  # Returns 2**3 = 8
-print s.add(2,3)  # Returns 5
-print s.div(5,2)  # Returns 5//2 = 2
+s = xmlrpc.client.ServerProxy('http://localhost:8000')
+print( s.pow(2,3) )  # Returns 2**3 = 8
+print( s.add(2,3) )  # Returns 5
+print( s.div(5,2) )  # Returns 5//2 = 2
 
 # Print list of available methods
-print s.system.listMethods()
+print( s.system.listMethods() )

chap-server.py

 
 
 from xmlrpc.server import SimpleXMLRPCServer
+from xmlrpc.server import SimpleXMLRPCRequestHandler
 
 # Restrict to a particular path.
 class RequestHandler(SimpleXMLRPCRequestHandler):
         return x // y
 
 server.register_instance(MyFuncs())
-
 # Run the server's main loop
-server.serve_forever()
+server.serve_forever()