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GeezerVison is showing github.com — gh-106318: Add examples for str.casefold() and str.lower() methods by adorilson · Pull Request #142154 · python/cpython

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@adorilson

@adorilson adorilson commented Dec 1, 2025 •
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WIP to #106318

gh-106318: Add examples for str.casefold() and str.lower() methods

📚 Documentation preview 📚: https://cpython-previews--142154.org.readthedocs.build/

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@adorilson
pythongh-106318: Add examples for str.casefold() and str.lower() methods
17bf91d
@bedevere-app bedevere-app Bot added docs Documentation in the Doc dir skip news labels Dec 1, 2025
@github-project-automation github-project-automation Bot added this to Docs PRs Dec 1, 2025
@github-project-automation github-project-automation Bot moved this to Todo in Docs PRs Dec 1, 2025
@bedevere-app bedevere-app Bot mentioned this pull request Dec 1, 2025
Add examples to docs for str methods #106318
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@bedevere-app bedevere-app Bot added the awaiting review label Dec 1, 2025
StanFromIreland
StanFromIreland reviewed Dec 1, 2025
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Comment thread Doc/library/stdtypes.rst Outdated
lowercase letter ``'ß'`` is equivalent to ``"ss"``. Since it is already
lowercase, :meth:`lower` would do nothing to ``'ß'``; :meth:`casefold`
converts it to ``"ss"``.
converts it to ``"ss"``, as follows:

@StanFromIreland StanFromIreland Dec 1, 2025

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I find this is a little repetitive, if one reads the sentence the example just repeats the exact same thing.

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@adorilson adorilson Dec 1, 2025

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What if we remove the sentence and put comments?

>>> 'ß'.casefold() # the German lowercase letter ``'ß'``
'ss'
>>> 'ß'.lower() # since it is already lowercase, lower does nothing
'ß'

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@adorilson
pythongh-106318: Add more useful examples for str.casefold()
1161111
@adorilson
adorilson requested a review from StanFromIreland December 13, 2025 18:56
vstinner
vstinner reviewed Jan 6, 2026
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Comment thread Doc/library/stdtypes.rst Resolved

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@adorilson @vstinner
Update Doc/library/stdtypes.rst
053f77a 
Co-authored-by: Victor Stinner <[email protected]>
@adorilson
adorilson requested a review from vstinner January 6, 2026 21:17
@vstinner
Merge branch 'main' into 106318.casefold_and_lower
139d470
vstinner
vstinner reviewed Jan 7, 2026
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Comment thread Doc/library/stdtypes.rst Resolved

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@adorilson @vstinner
Update Doc/library/stdtypes.rst
e74d883 
Co-authored-by: Victor Stinner <[email protected]>
@adorilson
adorilson requested a review from vstinner January 7, 2026 11:54
vstinner
vstinner approved these changes Jan 7, 2026
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LGTM

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@bedevere-app bedevere-app Bot added awaiting merge and removed awaiting review labels Jan 7, 2026
StanFromIreland
StanFromIreland approved these changes Jan 7, 2026
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LGTM

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StanFromIreland
StanFromIreland reviewed Jan 7, 2026
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Comment thread Doc/library/stdtypes.rst Resolved

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@adorilson @StanFromIreland
Update Doc/library/stdtypes.rst
49a2e4d 
Co-authored-by: Stan Ulbrych <[email protected]>
@vstinner vstinner added needs backport to 3.13 only security fixes needs backport to 3.14 bugs and security fixes labels Jan 7, 2026
@vstinner
vstinner enabled auto-merge (squash) January 7, 2026 16:12
@vstinner
vstinner merged commit 51a56a3 into python:main Jan 7, 2026
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@github-project-automation github-project-automation Bot moved this from Todo to Done in Docs PRs Jan 7, 2026
@miss-islington-app

miss-islington-app Bot commented Jan 7, 2026

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Thanks @adorilson for the PR, and @vstinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖
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@bedevere-app bedevere-app Bot removed the awaiting merge label Jan 7, 2026
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jan 7, 2026
@adorilson @vstinner
@StanFromIreland @miss-islington
pythongh-106318: Add examples for str.casefold() and str.lower() meth…
a870eaf 
…ods (pythonGH-142154)

(cherry picked from commit 51a56a3)

Co-authored-by: Adorilson Bezerra <[email protected]>
Co-authored-by: Victor Stinner <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Jan 7, 2026
@adorilson @vstinner
@StanFromIreland @miss-islington
pythongh-106318: Add examples for str.casefold() and str.lower() meth…
78d1a3d 
…ods (pythonGH-142154)

(cherry picked from commit 51a56a3)

Co-authored-by: Adorilson Bezerra <[email protected]>
Co-authored-by: Victor Stinner <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
@bedevere-app

bedevere-app Bot commented Jan 7, 2026

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GH-143524 is a backport of this pull request to the 3.14 branch.
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@bedevere-app bedevere-app Bot removed the needs backport to 3.14 bugs and security fixes label Jan 7, 2026
@bedevere-app

bedevere-app Bot commented Jan 7, 2026

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GH-143525 is a backport of this pull request to the 3.13 branch.
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@bedevere-app bedevere-app Bot removed the needs backport to 3.13 only security fixes label Jan 7, 2026
vstinner added a commit that referenced this pull request Jan 7, 2026
@miss-islington @adorilson
@vstinner @StanFromIreland
[3.14] gh-106318: Add examples for str.casefold() and str.lower() met…
76afbe2 
…hods (GH-142154) (#143524)

gh-106318: Add examples for str.casefold() and str.lower() methods (GH-142154)
(cherry picked from commit 51a56a3)

Co-authored-by: Adorilson Bezerra <[email protected]>
Co-authored-by: Victor Stinner <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
vstinner added a commit that referenced this pull request Jan 7, 2026
@miss-islington @adorilson
@vstinner @StanFromIreland
[3.13] gh-106318: Add examples for str.casefold() and str.lower() met…
1de1d3d 
…hods (GH-142154) (#143525)

gh-106318: Add examples for str.casefold() and str.lower() methods (GH-142154)
(cherry picked from commit 51a56a3)

Co-authored-by: Adorilson Bezerra <[email protected]>
Co-authored-by: Victor Stinner <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
@vstinner

vstinner commented Jan 7, 2026

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Merged, thanks!
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thunder-coding pushed a commit to thunder-coding/cpython that referenced this pull request Feb 15, 2026
@adorilson @vstinner
@StanFromIreland @thunder-coding
pythongh-106318: Add examples for str.casefold() and str.lower() meth…
bcd347b 
…ods (python#142154)

Co-authored-by: Victor Stinner <[email protected]>
Co-authored-by: Stan Ulbrych <[email protected]>
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@StanFromIreland StanFromIreland StanFromIreland approved these changes
@vstinner vstinner vstinner approved these changes

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@adorilson @vstinner @StanFromIreland
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