gh-140715: provide support for %F token in strptime; add test for it and %T by jyalim · Pull Request #140647 · python/cpython

jyalim · 2025-10-27T00:07:35Z

Incrementally builds C99+ datetime support with addition of %F with single line of code. Also adds two tests: one for %F and another for previously supported %T.

Passed all tests (especially changes to new one).

Passed patchcheck.

Issue: strptime token support and documentation modernization #140644

Issue: Update str*time to C11 format codes #140715

bedevere-app · 2025-10-27T00:07:39Z

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

python-cla-bot · 2025-10-27T00:07:39Z

All commit authors signed the Contributor License Agreement.

Lib/_strptime.py

Misc/NEWS.d/next/Library/2025-10-27-00-13-04.gh-issue-140644.WkozE0.rst

Lib/test/test_strptime.py

StanFromIreland · 2025-10-28T18:34:06Z

I moved this under #140715, can you please update the blurb filename.

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

…kozE0.rst Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

jyalim · 2025-10-28T21:14:32Z

I moved this under #140715, can you please update the blurb filename.

I think this is done!

Lib/test/test_strptime.py

Misc/NEWS.d/next/Library/2025-10-27-00-13-04.gh-issue-140715.WkozE0.rst

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

….py` instead)

StanFromIreland

Please add them to this tuple:

cpython/Lib/test/test_time.py

Lines 361 to 363 in a2495ff

    
           for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I', 
        
                             'j', 'm', 'M', 'p', 'S', 
        
                             'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):

Also, please update the docs removing the (0) note from its row.

The implementation looks good, just a few small things and this will be ready :-)

Misc/NEWS.d/next/Library/2025-10-27-00-13-04.gh-issue-140715.WkozE0.rst

Lib/test/test_strptime.py

Lib/test/datetimetester.py

…kozE0.rst Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Remove extra comments Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

shorten test name Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

shorten test function name Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

…tester request

…oken symmetry

jyalim · 2026-02-07T23:04:46Z

Thank you, @StanFromIreland, all changes have been made as requested!

Doc/library/datetime.rst

jyalim · 2026-02-08T14:52:00Z

Thank you again, @StanFromIreland, changes have been made.

StanFromIreland

Last few things.

Doc/library/datetime.rst

Lib/test/datetimetester.py

Lib/test/test_strptime.py

Lib/test/datetimetester.py

style alignment, add space after function arguments as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

fix punctuation in docs, as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

style alignment, space after functional argument, as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

…p.) and use `self.theclass.strptime`

jyalim · 2026-02-08T20:56:16Z

Thanks, @StanFromIreland, the requested changes were implemented!

Lib/test/datetimetester.py

StanFromIreland

LGTM

StanFromIreland · 2026-02-09T12:30:30Z

Thanks @jyalim, and congratulations for your first PR! Do you want to open a PR for one of the other format codes?

provide support for %F token in strptime; add test for it and %T

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jyalim requested review from abalkin and pganssle as code owners October 27, 2025 00:07

bedevere-app bot added the awaiting review label Oct 27, 2025

bedevere-app bot mentioned this pull request Oct 27, 2025

strptime token support and documentation modernization #140644

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📜🤖 Added by blurb_it.

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StanFromIreland reviewed Oct 27, 2025

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StanFromIreland changed the title ~~gh-140644: provide support for %F token in strptime; add test for it and %T~~ gh-140715: provide support for %F token in strptime; add test for it and %T Oct 28, 2025

bedevere-app bot mentioned this pull request Oct 28, 2025

Update str*time to C11 format codes #140715

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jyalim and others added 3 commits October 28, 2025 14:10

rm comment as recommended

d84fd54

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Misc/NEWS.d/next/Library/2025-10-27-00-13-04.gh-issue-140644.W…

cb8d7d3

…kozE0.rst Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Rename NEWS blurbit to match new github issue name

634ecea

Update test_strptime.py to use unittest methods, as requested

2e94037

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jyalim and others added 4 commits October 28, 2025 14:36

simplify news per recommendation

c23b731

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Remove datetime tests from test_strptime.py (added to `datetimetester…

e77ff96

….py` instead)

Tests moved to datetimetester.py

ffbc215

Merge branch 'main' into fix-issue-140644

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jyalim and others added 7 commits February 7, 2026 15:24

Update Misc/NEWS.d/next/Library/2025-10-27-00-13-04.gh-issue-140715.W…

ff10b73

…kozE0.rst Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Lib/test/test_strptime.py

b4ec5f8

Remove extra comments Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Lib/test/datetimetester.py

8513e1d

shorten test name Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Lib/test/datetimetester.py

0a928e6

shorten test function name Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

refactor test for %F as requested

029ed4f

refactor test for %F and %T as requested

88c6f02

refactor test %T as requested; rename %F + %T tests to match datetime…

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…tester request

jyalim added 2 commits February 7, 2026 15:55

add %F and %T tests, as requested, for ensuring strptime & strftime t…

c61cb2f

…oken symmetry

remove (0) note for %F in documentation, as requested

10ab774

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jyalim added 2 commits February 8, 2026 07:33

revert date change in

179afae

documenting %F addition to strptime

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StanFromIreland reviewed Feb 8, 2026

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jyalim and others added 7 commits February 8, 2026 13:30

Update Lib/test/test_strptime.py

29ba043

style alignment, add space after function arguments as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Lib/test/datetimetester.py

7d4c618

style alignment, add space after function arguments as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Doc/library/datetime.rst

2cf4890

fix punctuation in docs, as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Doc/library/datetime.rst

c5593dd

fix punctuation in docs, as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Lib/test/test_strptime.py

b0ca1d2

style alignment, space after functional argument, as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Update Lib/test/datetimetester.py

46981d1

style alignment, space after functional argument, as requested Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

relocate test methods for %F and %T to TestDate and TestDateTime (res…

500552b

…p.) and use `self.theclass.strptime`

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Update Lib/test/datetimetester.py

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bedevere-app bot added awaiting core review and removed awaiting review labels Feb 8, 2026

encukou merged commit d99f3fc into python:main Feb 9, 2026
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	for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
	'j', 'm', 'M', 'p', 'S',
	'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):

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