[ty] Fix unary and comparison operators for TypeVars with union bounds - #22925
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carljm
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January 28, 2026 19:17
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January 28, 2026 19:17
This fixes an issue where comparison and unary operators were incorrectly flagged as unsupported for TypeVars with union bounds (e.g., `bound=float` which becomes `int | float`). Fixes astral-sh/ty#2652
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| Lint rule | Added | Removed | Changed |
|---|---|---|---|
unsupported-operator |
0 | 15 | 0 |
invalid-return-type |
4 | 0 | 0 |
invalid-argument-type |
1 | 0 | 0 |
invalid-assignment |
1 | 0 | 0 |
| Total | 6 | 15 | 0 |
charliermarsh
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Jan 30, 2026
* main: (76 commits) [ty] Improve the check for `NewType`s with generic bases (#22961) [ty] Ban legacy `TypeVar` bounds or constraints from containing type variables (#22949) Bump the typing conformance suite pin (#22960) [ty] Emit an error if a TypeVarTuple is used to subscript `Generic` or `Protocol` without being unpacked (#22952) [ty] Reduce false positives when subscripting classes generic over `TypeVarTuple`s (#22950) [ty] Detect invalid attempts to subclass `Protocol[]` and `Generic[]` simultaneously (#22948) Fix suppression indentation matching (#22903) Remove hidden `--output-format` warning (#22944) [ty] Validate signatures of dataclass `__post_init__` methods (#22730) [ty] extend special-cased `numbers` diagnostic to `invalid-argument-type` errors (#22938) [ty] Avoid false positive for `not-iterable` with no-positive intersection types (#22089) [ty] Preserve pure negation types in descriptor protocol (#22907) [ty] add special-case diagnostic for `numbers` module (#22931) [ty] Move the location of more `invalid-overload` diagnostics (#22933) [ty] Fix unary and comparison operators for TypeVars with union bounds (#22925) [ty] Rule Selection: ignore/warn/select all rules (unless subsequently overriden) (#22832) [ty] Fix TypedDict construction from existing TypedDict values (#22904) [ty] fix bug in string annotations and clean up diagnostics (#22913) [ty] Improve support for goto-type, goto-declaration, hover, and highlighting of string annotations (#22878) [ty] Rename old typing imports to new on `unresolved-reference`. (#22827) ...
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This fixes an issue where comparison and unary operators were incorrectly flagged as unsupported for TypeVars with union bounds (e.g.,
bound=floatwhich becomesint | float).Fixes astral-sh/ty#2652