How to get logged in user’s uid from session in Django?

In case anyone wants to actually extract a user ID from an actual Session object (for whatever reason – I did!), here’s how:

from django.contrib.sessions.models import Session
from django.contrib.auth.models import User

session_key = '8cae76c505f15432b48c8292a7dd0e54'

session = Session.objects.get(session_key=session_key)
session_data = session.get_decoded()
print session_data
uid = session_data.get('_auth_user_id')
user = User.objects.get(id=uid)

Credit should go to Scott Barnham