graphite-project/ceres — pull request #1 by bmhatfield (2012-05-31 20:16:14+00:00)
Title: I modified ceres.py to be Python 2.4 compatible

I see the comment at the top of the file saying it requires Python 2.6, but a lot of people are still using RedHat 5 so I would recommend not dropping support for that distribution just yet. Since the new version of Graphite has a dependency on Ceres, it makes all of Graphite not 2.4 compatible.