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GeezerVison is showing github.com — gh-154757: Remove deprecated PyEval_InitThreads() function by vstinner · Pull Request #158037 · python/cpython

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@vstinner

@vstinner vstinner commented Sep 23, 2026 •
edited by bedevere-app Bot
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  • Issue: 26 C APIs scheduled for removal in 3.16 are still present #154757

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@vstinner
pythongh-154757: Remove deprecated PyEval_InitThreads() function
a885673
@vstinner
vstinner requested review from AA-Turner, ZeroIntensity, encukou and ericsnowcurrently as code owners September 23, 2026 21:53
@bedevere-app bedevere-app Bot mentioned this pull request Sep 23, 2026
26 C APIs scheduled for removal in 3.16 are still present #154757
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@bedevere-app bedevere-app Bot added the awaiting core review label Sep 23, 2026
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read-the-docs-community Bot commented Sep 23, 2026

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Documentation build overview

📚 cpython-previews | 🛠️ Build #34727428 | 📁 Comparing a885673 against main (6893326)

  🔍 Preview build  

5 files changed · ± 5 modified

± Modified

  • c-api/interp-lifecycle.html
  • c-api/stable.html
  • c-api/threads.html
  • whatsnew/3.16.html
  • whatsnew/changelog.html
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@vstinner

vstinner commented Sep 23, 2026

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I already removed this function once in 2023, in Python 3.13 alpha1! PR gh-105183 of issue gh-105182 (commit ec0082c). I restored this function in Python 3.13 beta1 because it affected 16 projects in Fedora: PR gh-117931 (commit 75eed5b). In the meanwhile, some projects have been updated to no longer call PyEval_InitThreads() on Python 3.7 and newer.
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@vstinner vstinner added the topic-C-API label Sep 23, 2026
@vstinner
vstinner merged commit 8293654 into python:main Sep 24, 2026
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@bedevere-app bedevere-app Bot removed the awaiting core review label Sep 24, 2026
@vstinner
vstinner deleted the remove_init_threads branch September 24, 2026 08:48
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@ericsnowcurrently ericsnowcurrently Awaiting requested review from ericsnowcurrently ericsnowcurrently is a code owner
@encukou encukou Awaiting requested review from encukou encukou is a code owner
@AA-Turner AA-Turner Awaiting requested review from AA-Turner AA-Turner is a code owner
@ZeroIntensity ZeroIntensity Awaiting requested review from ZeroIntensity ZeroIntensity is a code owner

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@vstinner
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