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GeezerVison is showing github.com — gh-141174: Test `type_repr()` of `Template` with invalid syntax in `Interpolation` by dr-carlos · Pull Request #155661 · python/cpython

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@dr-carlos

@dr-carlos dr-carlos commented Aug 13, 2026 •
edited by bedevere-app Bot
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Currently, there is no test in test_annotationlib.py of the following lines:

cpython/Lib/annotationlib.py

Lines 643 to 644 in 025e7d2

except SyntaxError:
return _template_to_ast_constructor(template)

These ensure that a reasonable value is returned when stringifying a Template annotation containing invalid syntax.

This could be tested for both get_annotations(format=Format.STRING) and type_repr(). But, it's impossible from a syntactic t-string and only possbile through artificial Template construction, which is only currently tested within the type_repr() tests. So I've only added a test there. Happy to add them in other places if that's required.

  • Issue: annotationlib: Improve test coverage #141174

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@dr-carlos
Test type_repr() of Template with invalid syntax in Interpolation
26bbd72
@dr-carlos
dr-carlos requested a review from JelleZijlstra as a code owner August 13, 2026 08:57
@bedevere-app bedevere-app Bot added the tests Tests in the Lib/test dir label Aug 13, 2026
@bedevere-app bedevere-app Bot mentioned this pull request Aug 13, 2026
annotationlib: Improve test coverage #141174
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@bedevere-app bedevere-app Bot added the awaiting review label Aug 13, 2026
@JelleZijlstra JelleZijlstra added skip news needs backport to 3.14 bugs and security fixes needs backport to 3.15 bugs and security fixes labels Aug 13, 2026
@JelleZijlstra
JelleZijlstra enabled auto-merge (squash) August 13, 2026 14:18
@JelleZijlstra
JelleZijlstra merged commit 5cc9e46 into python:main Aug 13, 2026
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@miss-islington-app

miss-islington-app Bot commented Aug 13, 2026

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Thanks @dr-carlos for the PR, and @JelleZijlstra for merging it 🌮🎉.. I'm working now to backport this PR to: 3.14, 3.15.
🐍🍒⛏🤖
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@bedevere-app bedevere-app Bot removed the awaiting review label Aug 13, 2026
@bedevere-app

bedevere-app Bot commented Aug 13, 2026

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GH-155711 is a backport of this pull request to the 3.15 branch.
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@bedevere-app bedevere-app Bot removed the needs backport to 3.15 bugs and security fixes label Aug 13, 2026
@bedevere-app

bedevere-app Bot commented Aug 13, 2026

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GH-155712 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 Aug 13, 2026
JelleZijlstra pushed a commit that referenced this pull request Aug 13, 2026
@miss-islington @dr-carlos
[3.14] gh-141174: Test type_repr() of Template with invalid synta…
767e6ad 
…x in `Interpolation` (GH-155661) (#155712)

gh-141174: Test `type_repr()` of `Template` with invalid syntax in `Interpolation` (GH-155661)

Test `type_repr()` of `Template` with invalid syntax in `Interpolation`
(cherry picked from commit 5cc9e46)

Co-authored-by: dr-carlos <[email protected]>
mbeijen pushed a commit to mbeijen/cpython that referenced this pull request Aug 14, 2026
@dr-carlos @mbeijen
pythongh-141174: Test type_repr() of Template with invalid syntax…
15a1acb 
… in `Interpolation` (python#155661)

Test `type_repr()` of `Template` with invalid syntax in `Interpolation`
hugovk pushed a commit that referenced this pull request Aug 27, 2026
@miss-islington @dr-carlos
[3.15] gh-141174: Test type_repr() of Template with invalid synta…
4c9ac60 
…x in `Interpolation` (GH-155661) (#155711)

Co-authored-by: dr-carlos <[email protected]>
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@JelleZijlstra JelleZijlstra Awaiting requested review from JelleZijlstra JelleZijlstra is a code owner

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@dr-carlos @JelleZijlstra
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