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I am struggling to understand sessions in CherryPy
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from mod_python import Session
sess = Session.Session(req, timeout = 60*60, lock=0)
#req is the request page object.

cherrypy.config.update({
    'tools.sessions.on': True,
    'tools.sessions.storage_type': 'ram'})

import cherrypy
from cherrypy.lib import sessions

def index(sid=0, secret=None, timeout=30, lock=1):
    cherrypy.session['test'] = 'test'
    cherrypy.lib.sessions.expire()
    return cherrypy.session.get('test','None')

sess = cherrypy.session
sess['_cp_username'] = None

cherrypy.session.regenerate()
cherrypy.session['_cp_username'] = cherrypy.request.login