The User model is in django.contrib.auth, not in the core of Django.
request.user is dealt with in the middleware that comes with the auth module.
http://code.djangoproject.com/browser/django/trunk/django/contrib/auth/middleware.py -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.