You are correct. But the setup.py for Supervisor noted support for Python 3 starting in May of 2014: https://github.com/Supervisor/supervisor/commit/ad5cd0849a5

You are correct. But the setup.py for Supervisor noted support for Python 3 starting in May of 2014: https://github.com/Supervisor/supervisor/commit/ad5cd0849a5f7c04afe6837add63ca653b585540 https://github.com/Supervisor/supervisor/commit/ad5cd0849a5f... I don't know why PyPI isn't updated yet.