[ty] Add narrowing for isinstance() and issubclass() checks that use PEP-604 unions#21334
Merged
AlexWaygood merged 2 commits intomainfrom Nov 8, 2025
Merged
[ty] Add narrowing for isinstance() and issubclass() checks that use PEP-604 unions#21334AlexWaygood merged 2 commits intomainfrom
isinstance() and issubclass() checks that use PEP-604 unions#21334AlexWaygood merged 2 commits intomainfrom
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Diagnostic diff on typing conformance testsNo changes detected when running ty on typing conformance tests ✅ |
|
…use PEP-604 unions
74224b4 to
110c852
Compare
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| Lint rule | Added | Removed | Changed |
|---|---|---|---|
invalid-argument-type |
0 | 14 | 0 |
unresolved-attribute |
2 | 11 | 0 |
invalid-assignment |
0 | 7 | 0 |
invalid-return-type |
1 | 2 | 2 |
not-iterable |
0 | 5 | 0 |
non-subscriptable |
0 | 4 | 0 |
possibly-missing-attribute |
0 | 3 | 1 |
unsupported-operator |
0 | 2 | 2 |
no-matching-overload |
0 | 2 | 0 |
index-out-of-bounds |
0 | 1 | 0 |
possibly-unresolved-reference |
0 | 1 | 0 |
| Total | 3 | 52 | 5 |
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Summary
Fixes astral-sh/ty#122. Following @sharkdp's recent changes, this is now trivial!
Test Plan
Added mdtests