django-cumulus provides a set of tools to utilize the python-swiftclient and Rackspace Cloud Files API from Django. It includes a custom file storage class, CumulusFilesStorage.
More documentation about the usage and installation of django-cumulus can be found on django-cumulus.readthedocs.org.
The source code for django-cumulus can be found and contributed to on github.com/django-cumulus/django-cumulus. There you can also file issues.