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Support free threaded Python versions like '3.13t' (#973)

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* Support free threaded Python versions like '3.13t'

Python wheels, pyenv, and a number of other tools use 't' in the Python
version number to identify free threaded builds. For example, '3.13t',
'3.14.0a1', '3.14t-dev'.

This PR supports that syntax in `actions/setup-python`, strips the "t",
and adds "-freethreading" to the architecture to select the correct
Python version.

See #771

* Add free threading to advanced usage documentation

* Fix desugaring of `3.13.1t` and add test case.

* Add freethreaded input and fix handling of prerelease versions

* Fix lint

* Add 't' suffix to python-version output

* Use distinct cache key for free threaded Python

* Remove support for syntax like '3.14.0a1'

* Clarify use of 't' suffix

* Improve error message when trying to use free threaded Python versions before 3.13
This commit is contained in:
Sam Gross
2025-03-04 17:49:43 -05:00
committed by GitHub
parent 6ca8e8598f
commit 9e62be81b2
8 changed files with 226 additions and 35 deletions
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action.yml
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@ -26,6 +26,9 @@ inputs:
allow-prereleases:
description: "When 'true', a version range passed to 'python-version' input will match prerelease versions if no GA versions are found. Only 'x.y' version range is supported for CPython."
default: false
freethreaded:
description: "When 'true', use the freethreaded version of Python."
default: false
outputs:
python-version:
description: "The installed Python or PyPy version. Useful when given a version range as input."