GaeUtilities: Session Problem - google-app-engine

Question

I'm programming an application with google app engine, with django 1.1 (no django pacth or others), well as you know is impossible use django login and session features so I download
Gae utility and use Session Object (http://gaeutilities.appspot.com/) but some time this object create 2 sessions instead 1 session ... here's code
def index(request):
aSWrap = SWrap(SWrap.createSession())
....
def login(request):
aSWrap = SWrap(SWrap.createSession())
....
class SWrap(object):
#classmethod
def createSession():
return Session(cookie_name='my_cookie',session_expire_time=7200)
and for setting session no expiration or really long expiration...enter code here
Thanks

Answer 1

Judging by the code, you're calling createsession twice within the same request. That will cause problems with David's library as well.
Also, gaeutilties session included a config file where you can modify all the default values as you like.
https://github.com/joerussbowman/gaeutilities/blob/master/appengine_utilities/settings_default.py
gaeutilities session also has security features lacking in gae-sessions. I'm afraid David didn't attempt to answer you question, rather just suggested you use his library which under your current implementation would have the exact same problem. You need to be sure you only initiate the session once per http request no matter what session library you're using.
I'm moving gaeutilities session to a decorator in order to address this issue as well and provide better performance. You can watch the master branch on Github for updates. https://github.com/joerussbowman/gaeutilities

Answer 2

I suggest using a different sessions library. Check out this comparison of the available sessions libraries for GAE.
I'd recommend gae-sessions - it presents an API almost identical to the library you are currently using, but it is much faster and shouldn't give you headaches like the bug you've encountered above.
Disclaimer: I wrote gae-sessions, but I'm not the only one who would recommend it. Here is a recent thread discussing sessions on the google group for GAE python.

Answer 3

What are you trying to do with SWrap(SWrap.createSession())? It looks like the result of SWrap.createSession() is passed to the SWrap() constructor. Have you omitted part of the definition of SWrap?
Perhaps this is more what you are wanting:
def index(request):
mysession = SWrap.createSession()
....
def login(request):
mysession = SWrap.createSession()
....
class SWrap(object):
#staticmethod
def createSession():
return Session(cookie_name='my_cookie',session_expire_time=7200)