René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"3.13 CI uses 3.12 for generation scripts","articleBody":"In #142248, I noticed that my script did not work in 3.13's CI, because it used Python 3.12 instead of 3.13 or later.\n\nThe problem is in 3.13's `configure` script. As [noted](https://github.com/python/cpython/pull/142248#issuecomment-3631606868) by @hugovk, 3.13's `configure` only checks for Python 3.13 and below, so the Python 3.14 installation used by `actions/setup-python` is thrown away, and an old Python 3.12.3 copy that comes with the image is used instead.\n\nThis is quite unfortunate, because for CI tools, we have to either limit ourselves to 3.12 features or create slightly different scripts for each branch (which is not ideal for backporting). In my case, I used `_colorize` in the job that I added, but I would have to remove that usage on the 3.13 branch, which would make it very frustrating to edit the script without conflicts.\n\nI see two good solutions:\n\n1. Force the `actions/setup-python` job to install Python 3.13 instead of 3.14.\n2. Add 3.14 to the `configure` script.\n\nMy personal preference is the latter.\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-142499\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/ZeroIntensity","@type":"Person","name":"ZeroIntensity"},"datePublished":"2025-12-09T13:46:23.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/142457/cpython/issues/142457"}