I've been experimenting with adding openid authentication to django. I couldn't find another software package to do this (although I did see this, which implies there is some other code out there) Anyway - here's mine so far.
The main problem I've hit is that the username column in the django authentication db schema (v0.90) only has 30 characters, so I can't use the openid url as the username.
Instead I'm currently using the first 30 chars of an md5 hash of the url, which sucks. I probably need to create a new openid auth model which holds the openid url and adds a view for getting new users to create a unique username (or something). Or maybe I should contact the django developers about expanding this?... hmm..