4 Commits

Author	SHA1	Message	Date
Douglas Creager	b705664d49	[ty] Handle typevars that have other typevars as a default (#17956) ... It's possible for a typevar to list another typevar as its default value: ```py class C[T, U = T]: ... ``` When specializing this class, if a type isn't provided for `U`, we would previously use the default as-is, leaving an unspecialized `T` typevar in the specialization. Instead, we want to use what `T` is mapped to as the type of `U`. ```py reveal_type(C()) # revealed: C[Unknown, Unknown] reveal_type(C[int]()) # revealed: C[int, int] reveal_type(C[int, str]()) # revealed: C[int, str] ``` This is especially important for the `slice` built-in type.	2025-05-08 19:01:27 -04:00
Douglas Creager	0d9b6a0975	[ty] Handle explicit variance in legacy typevars (#17897) ... We now track the variance of each typevar, and obey the `covariant` and `contravariant` parameters to the legacy `TypeVar` constructor. We still don't yet infer variance for PEP-695 typevars or for the `infer_variance` legacy constructor parameter. --------- Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com> Co-authored-by: Carl Meyer <carl@astral.sh>	2025-05-07 08:44:51 -04:00
Charlie Marsh	a2e9a7732a	Update class literal display to use `<class 'Foo'>` style (#17889) ... ## Summary Closes https://github.com/astral-sh/ruff/issues/17238.	2025-05-06 20:11:25 -04:00
Micha Reiser	b51c4f82ea	Rename Red Knot (#17820)	2025-05-03 19:49:15 +02:00