python - Where is the user data (username, id, sessionid) when using CAS SSO jasig pycas?

Question

When using python client with CAS from jasig, the following is sample codes:

import pycas
CAS_SERVER  = "https://casserver.mydomain"
SERVICE_URL = "http://webserver.mydomain/cgi-bin/webapp.py"
status, id, cookie = login(CAS_SERVER, SERVICE_URL)

The code supposed to work. But no user data supported as parameter for login(...). Where we support these kind of data? such as username, userid, sessioonid, *service_id*...