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Title: Docs: Use PY_VERSION_HEX for version comparison by hugovk · Pull Request #100179 · python/cpython · GitHub

Open Graph Title: Docs: Use PY_VERSION_HEX for version comparison by hugovk · Pull Request #100179 · python/cpython

X Title: Docs: Use PY_VERSION_HEX for version comparison by hugovk · Pull Request #100179 · python/cpython

Description: PY_VERSION_HEX should be used when comparing version numbers, for example PY_VERSION_HEX >= 0x03080000. Avoid PY_MAJOR_VERSION >= 3 && PY_MINOR_VERSION >= 8 because that is true for 3.8-3.12, but also for 4.8-4.12 and so on. This is already warned in patchlevel.h where PY_VERSION_HEX is defined: cpython/Include/patchlevel.h Lines 29 to 35 in 2e279e8 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2. Use this for numeric comparisons, e.g. #if PY_VERSION_HEX >= ... */ #define PY_VERSION_HEX ((PY_MAJOR_VERSION << 24) | \ (PY_MINOR_VERSION << 16) | \ (PY_MICRO_VERSION << 8) | \ (PY_RELEASE_LEVEL << 4) | \ (PY_RELEASE_SERIAL << 0)) It's a bit hidden there, let's hoist it into docs in apiabiversion.rst for visibilty. Preview https://deploy-preview-100179--python-cpython-preview.netlify.app/c-api/apiabiversion.html#c.PY_VERSION_HEX https://deploy-preview-100179--python-cpython-preview.netlify.app/whatsnew/3.11.html#whatsnew311-c-api-porting

Open Graph Description: PY_VERSION_HEX should be used when comparing version numbers, for example PY_VERSION_HEX >= 0x03080000. Avoid PY_MAJOR_VERSION >= 3 && PY_MINOR_VERSION >= 8 because that is true fo...

X Description: PY_VERSION_HEX should be used when comparing version numbers, for example PY_VERSION_HEX &gt;= 0x03080000. Avoid PY_MAJOR_VERSION &gt;= 3 &amp;&amp; PY_MINOR_VERSION &gt;= 8 bec...

Opengraph URL: https://github.com/python/cpython/pull/100179

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