Eric Mark Martin 33030b34cd [ty] linear variance inference for PEP-695 type parameters (#18713) ...

## Summary

Implement linear-time variance inference for type variables
(https://github.com/astral-sh/ty/issues/488).

Inspired by Martin Huschenbett's [PyCon 2025
Talk](https://www.youtube.com/watch?v=7uixlNTOY4s&t=9705s).

## Test Plan

update tests, add new tests, including for mutually recursive classes

---------

Co-authored-by: Carl Meyer <carl@astral.sh>

2025-08-19 17:54:09 -07:00

..

conditionals

[ty] fix lazy snapshot sweeping in nested scopes (#19908)

2025-08-14 17:52:52 -07:00

assert.md

Rename Red Knot (#17820)

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

assignment.md

[ty] more cases for the class body global fallback

2025-08-07 17:30:27 -07:00

bool-call.md

Rename Red Knot (#17820)

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

boolean.md

Rename Red Knot (#17820)

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

complex_target.md

[ty] Track different uses of legacy typevars, including context when rendering typevars (#19604)

2025-08-01 12:20:32 -04:00

hasattr.md

[ty] Attribute access on intersections with negative parts (#19524)

2025-07-25 14:56:14 +02:00

isinstance.md

[ty] Support narrowing on isinstance()/issubclass() if the second argument is a dynamic, intersection, union or typevar type (#18900)

2025-06-24 10:55:26 +00:00

issubclass.md

[ty] Support narrowing on isinstance()/issubclass() if the second argument is a dynamic, intersection, union or typevar type (#18900)

2025-06-24 10:55:26 +00:00

match.md

[ty] Improve disjointness inference for NominalInstanceTypes and SubclassOfTypes (#18864)

2025-06-24 20:27:37 +00:00

post_if_statement.md

Rename Red Knot (#17820)

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

truthiness.md

[ty] Reachability constraints (#18621)

2025-06-17 09:24:28 +02:00

type_guards.md

[ty] Splat variadic arguments into parameter list (#18996)

2025-07-22 14:33:08 -04:00

type.md

[ty] linear variance inference for PEP-695 type parameters (#18713)

2025-08-19 17:54:09 -07:00

while.md

[ty] Eagerly simplify 'True' and 'False' constraints (#18998)

2025-06-30 13:11:52 +02:00