google-app-engine : how to implement user logon success event

I'm using google-app-engine in python language, I'm want to do something when user logon success event.

for example

def onlogin_success():
  user = users.get_current_user()
 开发者_StackOverflow社区 log('user login %s' + user.nickname())

thanks

You need to generate the login URL via create_login_url and pass in a dest_url param.

The user will be taken to dest_url on successful login.