gh-154272: Skip forkserver tests when the start method is unavailable#154274
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serhiy-storchaka merged 1 commit intoJul 22, 2026
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…ilable Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
serhiy-storchaka
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needs backport to 3.13
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Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14, 3.15. |
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Sorry, @serhiy-storchaka, I could not cleanly backport this to |
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Sorry, @serhiy-storchaka, I could not cleanly backport this to |
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GH-154468 is a backport of this pull request to the 3.15 branch. |
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needs backport to 3.15
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GH-154471 is a backport of this pull request to the 3.14 branch. |
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GH-154472 is a backport of this pull request to the 3.13 branch. |
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On platforms where
forkserveris unavailable ('forkserver' not in multiprocessing.get_all_start_methods()), some tests error instead of skipping:concurrent_futuresProcessPoolForkserver*(viaget_context('forkserver')→ValueError),test_init'stest_forkserver, andtest_multiprocessing_forkserver.test_preload(directget_contextinsetUp). Guard the forkserver test package in its__init__.pyand addget_all_start_methods()checks to the concurrent_futures mixin andtest_forkserver.Related: GH-154271 (makes forkserver available on Solaris/illumos; this is the independent test fix).
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