Shunsuke Shibayama dc64c08633 [ty] bidirectional type inference using function return type annotations (#20528) ... ## Summary Implements bidirectional type inference using function return type annotations. This PR was originally proposed to solve astral-sh/ty#1167, but this does not fully resolve it on its own. Additionally, I believe we need to allow dataclasses to generate their own `__new__` methods, [use constructor return types ​​for inference](5844c0103d/crates/ty_python_semantic/src/types.rs (L5326-L5328)), and a mechanism to discard type narrowing like `& ~AlwaysFalsy` if necessary (at a more general level than this PR). ## Test Plan `mdtest/bidirectional.md` is added. --------- Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com> Co-authored-by: Ibraheem Ahmed <ibraheem@ibraheem.ca>		2025-10-11 00:38:35 +00:00
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legacy	[ty] bidirectional type inference using function return type annotations (#20528)	2025-10-11 00:38:35 +00:00
pep695	[ty] bidirectional type inference using function return type annotations (#20528)	2025-10-11 00:38:35 +00:00
builtins.md	[ty] Support using legacy typing aliases for generic classes in type annotations (#18404)	2025-06-03 12:09:51 +01:00
scoping.md	[ty] Use `typing.Self` for the first parameter of instance methods (#20517)	2025-09-29 21:08:08 +02:00