Python 3.15.0 candidate 2 is here!

This article announces Python 3.15.0 release candidate 2 (RC2), the final candidate before the stable release in October. It highlights the importance of testing third-party projects against the RC, as binary wheels built against RC will work with future 3.15 versions. The author shares a personal anecdote about catching a bug in 3.10 only after release, emphasizing the value of RC testing. It also provides a GitHub Actions configuration snippet using allow-prereleases and check-latest flags to automatically test against the latest RC and eventually the stable release. This is relevant for Python developers and DevOps engineers preparing for the upcoming version.