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gh-131649: fix test_string_literals SyntaxWarning#131650

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vstinner merged 1 commit intopython:mainfrom
graingert:fix-test-string-literals-syntax-warning
Mar 26, 2025
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gh-131649: fix test_string_literals SyntaxWarning#131650
vstinner merged 1 commit intopython:mainfrom
graingert:fix-test-string-literals-syntax-warning

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@graingert graingert commented Mar 24, 2025 •
edited by bedevere-app Bot
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@bedevere-app bedevere-app Bot added the tests Tests in the Lib/test dir label Mar 24, 2025
@bedevere-app bedevere-app Bot mentioned this pull request Mar 24, 2025
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@graingert graingert added skip news needs backport to 3.12 only security fixes needs backport to 3.13 bugs and security fixes labels Mar 24, 2025
@graingert graingert requested a review from pablogsal March 24, 2025 08:15
@graingert graingert marked this pull request as ready for review March 24, 2025 08:15
@graingert graingert force-pushed the fix-test-string-literals-syntax-warning branch from 22cee3c to 0c73ffe Compare March 24, 2025 08:18
vstinner
vstinner reviewed Mar 25, 2025
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Comment thread Lib/test/test_string_literals.py
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=SyntaxWarning)
eval("\"'''''''''''''''''''''invalid\ Escape\"")
eval("\"'''''''''''''''''''''invalid\\ Escape\"")
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@vstinner vstinner Mar 25, 2025

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Isn't the purpose of the test to emit a SyntaxWarning warning?

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@graingert graingert Mar 25, 2025

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Yes, but only when evaluated (which it still does). The eval here is intended to hide the SyntaxWarning from the interpreter at import, but it wasn't applied correctly

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@vstinner vstinner Mar 25, 2025 •
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Oh, that's confusing :-) But you're right, currently the code emits the warning when the code is compiled, not when eval() is called.

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LGTM

cc @serhiy-storchaka

Comment thread Lib/test/test_string_literals.py
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=SyntaxWarning)
eval("\"'''''''''''''''''''''invalid\ Escape\"")
eval("\"'''''''''''''''''''''invalid\\ Escape\"")
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@vstinner vstinner Mar 25, 2025 •
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Oh, that's confusing :-) But you're right, currently the code emits the warning when the code is compiled, not when eval() is called.

serhiy-storchaka
serhiy-storchaka approved these changes Mar 26, 2025
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LGTM.

@vstinner vstinner merged commit 2d83891 into python:main Mar 26, 2025
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miss-islington-app Bot commented Mar 26, 2025

Thanks @graingert for the PR, and @vstinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.12, 3.13.
🐍🍒⛏🤖

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miss-islington-app Bot commented Mar 26, 2025

Sorry, @graingert and @vstinner, I could not cleanly backport this to 3.13 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 2d83891dfd51f595de68b0336b3bfc876f7b2507 3.13

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miss-islington-app Bot commented Mar 26, 2025

Sorry, @graingert and @vstinner, I could not cleanly backport this to 3.12 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 2d83891dfd51f595de68b0336b3bfc876f7b2507 3.12

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vstinner commented Mar 26, 2025

Merged, thanks for the fix.

@graingert: Automated backports to 3.12 and 3.13 failed (with conflicts?). Do you want to attempt to backport your change manually?

@graingert graingert deleted the fix-test-string-literals-syntax-warning branch March 26, 2025 14:11
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brianschubert commented Mar 26, 2025

I took a look at the conflicts. The test boilerplate changed, but the tests strings are the same, so the backport should be as simple as just adding an extra \ as was done here. I'd be happy to give it go unless someone else is

brianschubert pushed a commit to brianschubert/cpython that referenced this pull request Mar 26, 2025
@graingert @brianschubert
[3.13] pythongh-131649: fix test_string_literals SyntaxWarning (pytho…
03791d5 
…nGH-131650)

(cherry picked from commit 2d83891)

Co-authored-by: Thomas Grainger <tagrain@gmail.com>
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graingert commented Mar 26, 2025

I took a look at the conflicts. The test boilerplate changed, but the tests strings are the same, so the backport should be as simple as just adding an extra \ as was done here. I'd be happy to give it go unless someone else is

Thanks that would be great!

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bedevere-app Bot commented Mar 26, 2025

GH-131766 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 Mar 26, 2025
vstinner pushed a commit that referenced this pull request Mar 26, 2025
@brianschubert @graingert
[3.13] gh-131649: fix test_string_literals SyntaxWarning (GH-131650) (#…
5bcb476 
…131766)

(cherry picked from commit 2d83891)

Co-authored-by: Thomas Grainger <tagrain@gmail.com>
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Mar 26, 2025
@brianschubert @graingert @miss-islington
[3.13] pythongh-131649: fix test_string_literals SyntaxWarning (pytho…
75d31d4 
…nGH-131650) (pythonGH-131766)

(cherry picked from commit 2d83891)
(cherry picked from commit 5bcb476)

Co-authored-by: Brian Schubert <brianm.schubert@gmail.com>
Co-authored-by: Thomas Grainger <tagrain@gmail.com>
vstinner pushed a commit that referenced this pull request Mar 26, 2025
@miss-islington @brianschubert @graingert
[3.12] gh-131649: fix test_string_literals SyntaxWarning (GH-131650) (G…
1826347 
…H-131766) (#131772)

[3.13] gh-131649: fix test_string_literals SyntaxWarning (GH-131650) (GH-131766)

(cherry picked from commit 2d83891)
(cherry picked from commit 5bcb476)

Co-authored-by: Brian Schubert <brianm.schubert@gmail.com>
Co-authored-by: Thomas Grainger <tagrain@gmail.com>
diegorusso pushed a commit to diegorusso/cpython that referenced this pull request Apr 1, 2025
@graingert @diegorusso
pythongh-131649: fix test_string_literals SyntaxWarning (python#131650)
d30a0e6
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hugovk commented Apr 8, 2025

3.12 is now security-only, so the backport is no longer needed.

https://discuss.python.org/t/python-3-12-is-now-security-fix-only/87520

@hugovk hugovk removed the needs backport to 3.12 only security fixes label Apr 8, 2025
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