Help test Python 3.15!

Calling all Python library maintainers! 🐍 The second and final Python 3.15 release candidate is out! 🎉 It’s your last chance to join the cool testers’ club and say that YOU helped test 3.15 before the big day on 1st October! 😎 PEP 790 defines the release schedule for Python 3.15.0: The first release candidate came out on 4th August 2026 The second release candidate came out on 1st September 2026 And the full release is set for 1st October 2026 In his announcement, Hugo van Kemenade (👋 hi, that’s me!), release manager for Python 3.14 and 3.15, gave a call to action: We strongly encourage maintainers of third-party Python projects to prepare their projects for 3.15 during this phase, and publish Python 3.15 wheels on PyPI to be ready for the final release of 3.15.0, and to help other projects do their own testing. Any binary wheels built against Python 3.15.0 release candidates will work with future versions of Python 3.15. As always, report any issues to the Python bug tracker. Test…