rtype = void

In which way should it return void?
(1) Do you want it to mime json-rpc's notification (udp-like transmission where you send a request but never recieve a reponse)
(2) Or do you want a normal response just without return values?

if 2:
  In the current Ladon implementation methods must return a result, so the easiest solution is to return a dummy int,
  bool or empty string. You can also create a new class inheriting CustomResponse (ladon.server.customresponse). You can use
  such classes as rtype to methods and control the http response 100%.

See example here:
http://pypi.python.org/pypi/ladon/0.6.5#new-in-0-6-4

Best Regards
Jakob simon-Gaarde

I need response without return values. Probably I will return int or boolean value. Thanks for answer