filtering queryset django code example

Example 1: pass in queryset as filter django

users = UserClasses.objects.filter(class_id=data['class_id'])
user_details = User.objects.filter(id__in=users.values_list('id', flat=True))

Example 2: and in django query filter

Blog.objects.filter(entry__headline__contains='Lennon', entry__pub_date__year=2008)