The Python development team builds and tests on many machines, architectures and configurations. These variations are divided into two categories: stable and unstable. The stable versions are the primary platforms that should always have all tests passing. We manage all our main branches for stability. If any of the stable configurations are failing, please contact python-dev@python.org.

We strive to keep all configurations passing all tests, but sometimes we require specialized expertise to fix problems. If you can help fix problems on an unstable platform, send mail to python-dev@python.org, open an issue on bugs.python.org, or submit a pull request on GitHub. You can help us convert unstable platforms to stable and supported.