David Peter 2acf1cc0fd [ty] Infer precise types for isinstance(…) calls involving typevars (#21999) ...

## Summary

Infer `Literal[True]` for `isinstance(x, C)` calls when `x: T` and `T`
has a bound `B` that satisfies the `isinstance` check against `C`.
Similar for constrained typevars.

closes https://github.com/astral-sh/ty/issues/1895

## Test Plan

* New Markdown tests
* Verified the the example in the linked ticket checks without errors

2025-12-16 10:34:30 +01:00

..

annotation.md

ty_python_semantic: add union type context to function call type errors

2025-05-09 13:40:51 -04:00

builtins.md

[ty] Infer precise types for isinstance(…) calls involving typevars (#21999)

2025-12-16 10:34:30 +01:00

callable_instance.md

[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)

2025-09-23 14:26:55 +00:00

callables_as_descriptors.md

[ty] Retain the function-like-ness of Callable types when binding self (#21614)

2025-11-24 21:14:03 +00:00

constructor.md

[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)

2025-09-23 14:26:55 +00:00

dunder_import.md

[ty] Make __getattr__ available for ModuleType instances (#21450)

2025-11-14 13:59:14 +01:00

dunder.md

[ty] Use "cannot" consistently over "can not" (#21255)

2025-11-03 10:38:20 -05:00

function.md

[ty] Improve invalid-argument-type diagnostics where a union type was provided (#21044)

2025-10-23 13:16:21 +00:00

getattr_static.md

[ty] Use "cannot" consistently over "can not" (#21255)

2025-11-03 10:38:20 -05:00

invalid_syntax.md

ty_python_semantic: add union type context to function call type errors

2025-05-09 13:40:51 -04:00

methods.md

[ty] Use unqualified names for displays of TypeAliasTypes and unbound ParamSpecs/TypeVars (#21960)

2025-12-13 20:23:16 +00:00

never.md

Rename Red Knot (#17820)

2025-05-03 19:49:15 +02:00

open.md

[ty] support PEP 613 type aliases (#21394)

2025-11-20 17:59:35 -08:00

overloads.md

[ty] Fix overload filtering to prefer more "precise" match (#21859)

2025-12-09 20:29:34 +05:30

replace.md

[ty] Sync vendored typeshed stubs (#20658)

2025-10-01 10:11:48 +02:00

str_startswith.md

[ty] "foo".startswith is not an instance of types.MethodWrapperType (#20317)

2025-09-10 11:14:26 +00:00

subclass_of.md

[ty] Include synthesized arguments in displayed counts for too-many-positional-arguments (#18098)

2025-05-14 22:51:23 -04:00

union.md

[ty] more detailed description of "Size limit on unions of literals" in mdtest (#21804)

2025-12-05 17:34:39 +00:00