Update minimum supported Python to 3.10 #234
Description
Via #200 we just bumped the minimum supported version of Python to 3.9. But as known this is no longer supported since version 3.9.25 which was released on 2025-10-31.
I'm filing this as issue for now to get feedback from other vendors regarding their requirements and possible blockers. I assume that we want to keep support for all available Python versions or should we even consider bumping the minimum version to 3.10? Feedback is welcome.
From Mozilla’s side, we could define a minimum Python version specifically for running WPT tests, independent of the versions used for the build process or other test suites. The open question, however, is how to handle downstream consumers (such as Debian) that still support LTS releases relying on no longer supported Python 3.9.
CC @jgraham, @foolip, @jcscottiii, @gsnedders, @Ms2ger