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[3.13] gh-141004: Add a CI job ensuring that new C APIs include documentation (GH-142102) by ZeroIntensity · Pull Request #142248 · python/cpython

ZeroIntensity

Do you know if the configure script on 3.13 checks for 3.14?

No, it only checks the current version and lower.

main:

for ac_prog in python$PACKAGE_VERSION python3.15 python3.14 python3.13 python3.12 python3.11 python3.10 python3 python

3.14:

for ac_prog in python$PACKAGE_VERSION python3.15 python3.14 python3.13 python3.12 python3.11 python3.10 python3 python

3.13:

for ac_prog in python$PACKAGE_VERSION python3.13 python3.12 python3.11 python3.10 python3 python

I think that might be the problem. I'm guessing that Python 3.12 is already installed on the system the CI job is running on, and actions/setup-python installs 3.14, which isn't detected by the configure script, so it falls back to 3.12.

Yes, that indeed looks like the problem.

Here's a test workflow that installs a give version, then tries to check for them all:

          python3.15 --version --version || true
          python3.14 --version --version || true
          python3.13 --version --version || true
          python3.12 --version --version || true
          python3.11 --version --version || true
          python3.10 --version --version || true

And they all have the given version, plus 3.12. For example with 3.15:

Python 3.15.0a2 (main, Nov 19 2025, 15:10:47) [GCC 13.3.0]
/home/runner/work/_temp/9872e36d-a21e-4c3e-8aa1-e6d8f6781c42.sh: line 2: python3.14: command not found
/home/runner/work/_temp/9872e36d-a21e-4c3e-8aa1-e6d8f6781c42.sh: line 3: python3.13: command not found
Python 3.12.3 (main, Nov  6 2025, 13:44:16) [GCC 13.3.0]
/home/runner/work/_temp/9872e36d-a21e-4c3e-8aa1-e6d8f6781c42.sh: line 5: python3.11: command not found
/home/runner/work/_temp/9872e36d-a21e-4c3e-8aa1-e6d8f6781c42.sh: line 6: python3.10: command not found

And it's an old 3.12.3 baked into the image, because when we specifically ask for 3.12 we get the newest 3.12.12:

/home/runner/work/_temp/5205e491-dc12-4355-bc92-e4fd7a15bf8a.sh: line 1: python3.15: command not found
/home/runner/work/_temp/5205e491-dc12-4355-bc92-e4fd7a15bf8a.sh: line 2: python3.14: command not found
/home/runner/work/_temp/5205e491-dc12-4355-bc92-e4fd7a15bf8a.sh: line 3: python3.13: command not found
Python 3.12.12 (main, Oct 10 2025, 01:01:16) [GCC 13.3.0]
/home/runner/work/_temp/5205e491-dc12-4355-bc92-e4fd7a15bf8a.sh: line 5: python3.11: command not found
/home/runner/work/_temp/5205e491-dc12-4355-bc92-e4fd7a15bf8a.sh: line 6: python3.10: command not found