How to force a user logout in Django?

Question

In my Django app under certain conditions I want to be able to force users to log out by a username. Not necessarily the current user who is logged in, but another user. So,

Answer 1

Perhaps, a bit of middleware that references a list of users who have been forced to log out. Next time the user tries to do anything, log them out then, redirects them, etc.

Unless of course, they need to be logged out immediately. But then again, they wouldn't notice until they next tried to make a request anyway, so the above solution may just work.