Kotti is an interesting new content management system that runs on Python.
Kotti is by itself rather simple, as even expected features — like a post archive and date publishing — are missing; however, as the CMS was written with extend-ability in mind, Kotti seems legit for a GitHub fork and some work.
The CMS features an interesting permission system, with user permissions being handed to areas of a website instead of specific actions.
Kotti would likely do well to provide more features out of the box. The CMS still provides a solid starting ground, though.