Most optimized way to delete all sessions for a specific user in Django?

Question

I\'m running Django 1.3, using Sessions Middleware and Auth Middleware:

# settings.py

SESSION_ENGINE = django.contrib.sessions.backends.db   # Persist sessions          


        

Answer 1

Another version of a function using list comprehension that will just straight up delete every unexpired session of a user:

from django.utils import timezone
from django.contrib.sessions.models import Session


def delete_all_unexpired_sessions_for_user(user):
    unexpired_sessions = Session.objects.filter(expire_date__gte=timezone.now())
    [
        session.delete() for session in unexpired_sessions
        if str(user.pk) == session.get_decoded().get('_auth_user_id')
    ]