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GeezerVison is showing github.com — [3.15] gh-149083: Document that dataclasses.MISSING and KW_ONLY are sentinels (GH-155919) by miss-islington · Pull Request #155927 · python/cpython

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@miss-islington

@miss-islington miss-islington commented Aug 17, 2026 •
edited by bedevere-app Bot
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(cherry picked from commit e13c3d6)

Co-authored-by: Sanghun Lee [email protected]
Co-authored-by: Claude Opus 5 (1M context) [email protected]

  • Issue: Use PEP 661 (sentinels) in the standard library #149083

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@fregataa @claude @miss-islington
pythongh-149083: Document that dataclasses.MISSING and KW_ONLY are se…
331b461 
…ntinels (pythonGH-155919)

(cherry picked from commit e13c3d6)

Co-authored-by: Sanghun Lee <[email protected]>
Co-authored-by: Claude Opus 5 (1M context) <[email protected]>
@miss-islington
miss-islington requested a review from ericvsmith as a code owner August 17, 2026 03:51
@bedevere-app bedevere-app Bot added docs Documentation in the Doc dir skip news labels Aug 17, 2026
@python-cla-bot

python-cla-bot Bot commented Aug 17, 2026 •
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All commit authors signed the Contributor License Agreement.

CLA signed
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@github-project-automation github-project-automation Bot added this to Docs PRs Aug 17, 2026
@github-project-automation github-project-automation Bot moved this to Todo in Docs PRs Aug 17, 2026
This was referenced Aug 17, 2026
Use PEP 661 (sentinels) in the standard library #149083
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gh-149083: Document that dataclasses.MISSING and KW_ONLY are sentinels #155919
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@bedevere-app bedevere-app Bot added sprint awaiting review labels Aug 17, 2026
@github-project-automation github-project-automation Bot added this to Sprint Aug 17, 2026
@github-project-automation github-project-automation Bot moved this to Todo in Sprint Aug 17, 2026
@read-the-docs-community

read-the-docs-community Bot commented Aug 17, 2026

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Documentation build overview

📚 cpython-previews | 🛠️ Build #34095636 | 📁 Comparing 331b461 against main (7a845ce)

  🔍 Preview build  

297 files changed · + 1 added · ± 292 modified · - 4 deleted

+ Added

  • library/asyncio-policy.html

± Modified

  • index.html
  • py-modindex.html
  • c-api/apiabiversion.html
  • c-api/capsule.html
  • c-api/coro.html
  • c-api/frame.html
  • c-api/gen.html
  • c-api/init_config.html
  • c-api/interp-lifecycle.html
  • c-api/module.html
  • and 282 more...

- Deleted

  • deprecations/pending-removal-in-3.21.html
  • library/tkinter.fontchooser.html
  • library/tkinter.systray.html
  • whatsnew/3.16.html
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@hugovk

hugovk commented Aug 17, 2026

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@fregataa Please could you sign the CLA again?

#155927 (comment)

See https://devguide.python.org/getting-started/pull-request-lifecycle/#why-do-i-need-to-sign-the-cla-again
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@hugovk
hugovk enabled auto-merge (squash) August 17, 2026 04:08
@hugovk
hugovk merged commit ac4e5d2 into python:3.15 Aug 17, 2026
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@github-project-automation github-project-automation Bot moved this from Todo to Done in Docs PRs Aug 17, 2026
@github-project-automation github-project-automation Bot moved this from Todo to Done in Sprint Aug 17, 2026
@bedevere-app bedevere-app Bot removed the awaiting review label Aug 17, 2026
@miss-islington
miss-islington deleted the backport-e13c3d6-3.15 branch August 17, 2026 07:52
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@ericvsmith ericvsmith Awaiting requested review from ericvsmith ericvsmith is a code owner

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@miss-islington @hugovk @fregataa
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