gh-143420: Clarify sequence behavior for slice indexes by skirpichev · Pull Request #143422 · python/cpython · GitHub
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gh-143420: Clarify sequence behavior for slice indexes#143422

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hugovk merged 5 commits into
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skirpichev:improve-slice-notes/143420
Jan 11, 2026
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gh-143420: Clarify sequence behavior for slice indexes#143422
hugovk merged 5 commits into
python:mainfrom
skirpichev:improve-slice-notes/143420

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@skirpichev skirpichev commented Jan 5, 2026 •
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This explain what happens when for negative start or stop arguments of big magnitude.

Also reference sequence term in the :mod:array docs.

📚 Documentation preview 📚: https://cpython-previews--143422.org.readthedocs.build/en/143422/library/stdtypes.html

https://cpython-previews--143422.org.readthedocs.build/en/143422/library/stdtypes.html#common-sequence-operations

@skirpichev
pythongh-143420: Clarify sequence behavior for slice indexes
598ea16 
This explain what happens when for negative start or stop
arguments of big magnitude.

Also reference sequence term in the :mod:`array` docs.
@skirpichev skirpichev added needs backport to 3.13 bugs and security fixes needs backport to 3.14 bugs and security fixes labels Jan 5, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Jan 5, 2026
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@bedevere-app bedevere-app Bot added docs Documentation in the Doc dir skip news labels Jan 5, 2026
@github-project-automation github-project-automation Bot moved this to Todo in Docs PRs Jan 5, 2026
@skirpichev skirpichev requested a review from hugovk January 9, 2026 22:54
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skirpichev commented Jan 9, 2026

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picnixz
picnixz reviewed Jan 10, 2026
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Comment thread Doc/library/array.rst Outdated
Comment thread Doc/library/stdtypes.rst Outdated
@skirpichev skirpichev requested a review from picnixz January 10, 2026 23:22
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skirpichev commented Jan 10, 2026

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What we should do with common array methods? I think removal (like for other sequence types, e.g. bytearray) is a good idea. But broken links is a problem.

@hugovk hugovk merged commit 23b9377 into python:main Jan 11, 2026
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miss-islington-app Bot commented Jan 11, 2026

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Thanks @skirpichev for the PR, and @hugovk for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

@github-project-automation github-project-automation Bot moved this from Todo to Done in Docs PRs Jan 11, 2026
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jan 11, 2026
@skirpichev @miss-islington
pythongh-143420: Clarify sequence behavior for slice indexes (pythonG…
75f9eb4 
…H-143422)

(cherry picked from commit 23b9377)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jan 11, 2026
@skirpichev @miss-islington
pythongh-143420: Clarify sequence behavior for slice indexes (pythonG…
060c90e 
…H-143422)

(cherry picked from commit 23b9377)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
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GH-143701 is a backport of this pull request to the 3.14 branch.

@bedevere-app bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Jan 11, 2026
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GH-143703 is a backport of this pull request to the 3.13 branch.

@bedevere-app bedevere-app Bot removed the needs backport to 3.13 bugs and security fixes label Jan 11, 2026
hugovk pushed a commit that referenced this pull request Jan 11, 2026
@miss-islington @skirpichev
[3.14] gh-143420: Clarify sequence behavior for slice indexes (GH-143422
1b38e89 
) (#143701)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
hugovk pushed a commit that referenced this pull request Jan 11, 2026
@miss-islington @skirpichev
[3.13] gh-143420: Clarify sequence behavior for slice indexes (GH-143422
cf5b31c 
) (#143703)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
@skirpichev skirpichev deleted the improve-slice-notes/143420 branch January 11, 2026 18:03
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reidenong pushed a commit to reidenong/cpython that referenced this pull request Jan 12, 2026
@skirpichev @reidenong
pythongh-143420: Clarify sequence behavior for slice indexes (python#…
7fcab74 
…143422)
thunder-coding pushed a commit to thunder-coding/cpython that referenced this pull request Feb 15, 2026
@skirpichev @thunder-coding
pythongh-143420: Clarify sequence behavior for slice indexes (python#…
d95fded 
…143422)
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