Django contrib sessions module missing imports (os, time), causes error on new session

[George Vilches]

As of r6333, there are missing imports in django/contrib/sessions/models.py:

Line 1 currently is:

import base64, md5, random, sys, datetime

should be:

import base64, md5, random, sys, datetime, os, time

Looks like it used to be like that and just got lost.

When using a new project, it gives this error:

NameError: global name 'os' is not defined

[George Vilches]

Patch against r6423 to fix session import.

[Matt Boersma]

It looks like Jacob accidentally excised two imports that are used later in the module in changeset [6333]. The patch fixes it.

[Gary Wilson]

(In [6425]) Fixed #5598 -- Restored needed imports that were removed in [6333]. Thanks, gav.