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Ignore typeshed test files #17249

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merged 5 commits into from
May 15, 2024
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@cdce8p cdce8p commented May 15, 2024

During the last typehed update, we included the @tests folder which is unnecessary for mypy.
Update the sync-typeshed.py script to exclude it in the future.

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cdce8p and others added 5 commits May 15, 2024 12:07
This is allegedly causing large performance problems, see 13821

typeshed/8231 had zero hits on mypy_primer, so it's not the worst thing
to undo. Patching this in typeshed also feels weird, since there's a
more general soundness issue. If a typevar has a bound or constraint, we
might not want to solve it to a Literal.

If we can confirm the performance regression or fix the unsoundness
within mypy, I might pursue upstreaming this in typeshed.

(Reminder: add this to the sync_typeshed script once merged)
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅

@JelleZijlstra JelleZijlstra merged commit cdc956b into python:master May 15, 2024
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@cdce8p cdce8p deleted the typeshed-ignore-tests branch May 15, 2024 19:49
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4 participants