Setting expirty data on a cookie

[sophie_newbie]

Does anyone know how to do this? I can't seem to make it work.

I'm using:

c = Cookie.SimpleCookie()
c['data'] = "unamepwordwhatever"
c.expires = time.time() + 300
print c


This doesn't seem to work, so I'm assuming isn't the correct way to
set an expiry data? Anyone able to help me out here?

Thanks!