David Peter 66e9d57797 [ty] Support legacy typing special forms in implicit type aliases (#21433) ...

## Summary

Support various legacy `typing` special forms (`List`, `Dict`, …) in
implicit type aliases.

## Ecosystem impact

A lot of true positives (e.g. on `alerta`)!

## Test Plan

New Markdown tests

2025-11-14 09:08:58 +01:00

..

annotations

[ty] Ensure annotation/type expressions in stub files are always deferred (#21401)

2025-11-13 17:14:54 +00:00

assignment

[ty] Handle annotated self parameter in constructor of non-invariant generic classes (#21325)

2025-11-10 19:46:49 -05:00

binary

[ty] Rename UnionType to types.UnionType (#21262)

2025-11-03 22:06:56 +01:00

boolean

Revert "[ty] Better control flow for boolean expressions that are inside if (#18010)" (#18150)

2025-05-17 08:27:32 -04:00

boundness_declaredness

[ty] Reformulation of public symbol inference test suite (#20667)

2025-10-01 14:26:17 +02:00

call

[ty] Silence false-positive diagnostics when using typing.Dict or typing.Callable as the second argument to isinstance() (#21386)

2025-11-11 19:30:01 +00:00

class

[ty] implement typing.NewType by adding Type::NewTypeInstance

2025-11-10 14:55:47 -08:00

comparison

[ty] detect cycles in binary comparison inference (#20446)

2025-09-17 09:45:25 +02:00

comprehensions

[ty] fix global symbol lookup from eager scopes (#21317)

2025-11-12 10:15:51 -08:00

conditional

[ty] Support as-patterns in reachability analysis (#19728)

2025-08-04 20:13:50 +02:00

dataclasses

[ty] Improve generic call expression inference (#21210)

2025-11-10 21:29:05 +00:00

declaration

[ty] Format conflicting types as an enumeration (#18956)

2025-06-26 14:29:33 +02:00

diagnostics

[ty] continue and break statements outside loops are syntax errors (#20944)

2025-10-17 17:13:40 +00:00

directives

[ty] Use annotated parameters as type context (#20635)

2025-10-03 17:14:51 -04:00

doc

ty_python_semantic: add union type context to function call type errors

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

exception

[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)

2025-10-12 18:39:32 +00:00

expression

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

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

function

[ty] don't union in default type for annotated parameters (#21208)

2025-11-02 18:21:54 -05:00

generics

[ty] Ensure annotation/type expressions in stub files are always deferred (#21401)

2025-11-13 17:14:54 +00:00

ide_support

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

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

import

[ty] Consider from thispackage import y to re-export y in __init__.pyi (#21387)

2025-11-11 14:41:14 -05:00

literal

[ty] Type inference for comprehensions (#20962)

2025-11-02 14:35:33 +01:00

loops

[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)

2025-10-27 11:19:12 +00:00

narrow

[ty] Ensure annotation/type expressions in stub files are always deferred (#21401)

2025-11-13 17:14:54 +00:00

regression

[ty] fix global symbol lookup from eager scopes (#21317)

2025-11-12 10:15:51 -08:00

scopes

[ty] Improve error messages for unresolved attribute diagnostics (#20963)

2025-10-19 10:58:25 +01:00

shadowing

Rename Red Knot (#17820)

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

snapshots

[ty] Further improve subscript assignment diagnostics (#21411)

2025-11-13 13:31:14 +01:00

stubs

[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)

2025-10-27 11:19:12 +00:00

subscript

[ty] Further improve subscript assignment diagnostics (#21411)

2025-11-13 13:31:14 +01:00

suppressions

[ty] Add suggestion to unknown rule diagnostics, rename unknown-rule lint to ignore-comment-unknown-rule (#20948)

2025-10-18 12:44:21 +02:00

type_compendium

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

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

type_of

[ty] Support type[…] and Type[…] in implicit type aliases (#21421)

2025-11-13 19:02:24 +01:00

type_properties

[ty] introduce local variables for from imports of submodules in __init__.py(i) (#21173)

2025-11-10 23:04:56 +00:00

type_qualifiers

[ty] Fix false positive for Final attribute assignment in __init__ (#21158)

2025-11-11 12:54:05 -08:00

unary

Update class literal display to use <class 'Foo'> style (#17889)

2025-05-06 20:11:25 -04:00

with

[ty] Use typing.Self for the first parameter of instance methods (#20517)

2025-09-29 21:08:08 +02:00

.mdformat.toml

Rename Red Knot (#17820)

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

async.md

[ty] Support async/await, async with and yield from (#19595)

2025-07-30 11:51:21 +02:00

attributes.md

[ty] Skip eagerly evaluated scopes for attribute storing (#20856)

2025-11-11 14:45:34 -08:00

bidirectional.md

[ty] Improve generic call expression inference (#21210)

2025-11-10 21:29:05 +00:00

classes.md

[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)

2025-10-27 11:19:12 +00:00

cycle.md

[ty] Avoid ever-growing default types (#20991)

2025-10-21 19:13:36 +02:00

decorators.md

ty_python_semantic: add union type context to function call type errors

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

del.md

[ty] No union with Unknown for module-global symbols (#20664)

2025-10-01 16:40:30 +02:00

deprecated.md

[ty] Consistent use of American english (in rules) (#19488)

2025-07-22 16:10:38 +02:00

descriptor_protocol.md

[ty] Use the return type of __get__ for descriptor lookups even when __get__ is called with incorrect arguments (#21424)

2025-11-13 12:05:10 +00:00

enums.md

[ty] Fix incorrect inference of enum.auto() for enums with non-int mixins, and imprecise inference of enum.auto() for single-member enums (#20541)

2025-11-10 17:53:08 +00:00

exhaustiveness_checking.md

[ty] Improve exhaustiveness analysis for type variables with bounds or constraints (#21172)

2025-10-31 16:51:11 -04:00

final.md

Rename Red Knot (#17820)

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

implicit_type_aliases.md

[ty] Support legacy typing special forms in implicit type aliases (#21433)

2025-11-14 09:08:58 +01:00

instance_layout_conflict.md

[ty] initial support for slots=True in dataclasses (#20278)

2025-09-07 18:25:35 +01:00

intersection_types.md

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

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

invalid_syntax.md

[ty] Implicit type aliases: Add support for typing.Union (#21363)

2025-11-12 12:59:14 +01:00

known_constants.md

Rename Red Knot (#17820)

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

literal_promotion.md

[ty] Do not promote literals in contravariant positions of generic specializations (#21171)

2025-10-31 17:48:34 +01:00

mdtest_config.md

Rename Red Knot (#17820)

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

mdtest_custom_typeshed.md

[ty] Remove Type::Tuple (#19669)

2025-08-11 22:03:32 +01:00

metaclass.md

Update class literal display to use <class 'Foo'> style (#17889)

2025-05-06 20:11:25 -04:00

mro.md

[ty] Rename UnionType to types.UnionType (#21262)

2025-11-03 22:06:56 +01:00

named_tuple.md

[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)

2025-10-27 11:19:12 +00:00

overloads.md

[ty] Infer type of self for decorated methods and properties (#21123)

2025-10-29 21:22:38 +00:00

paramspec.md

[ty] Ensure annotation/type expressions in stub files are always deferred (#21401)

2025-11-13 17:14:54 +00:00

pep613_type_aliases.md

[ty] Fall back to Divergent for deeply nested specializations (#20988)

2025-10-22 14:29:10 +02:00

pep695_type_aliases.md

[ty] Add cycle handling to lazy_default (#20967)

2025-10-23 10:05:08 +02:00

properties.md

[ty] Use the return type of __get__ for descriptor lookups even when __get__ is called with incorrect arguments (#21424)

2025-11-13 12:05:10 +00:00

protocols.md

[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)

2025-10-27 11:19:12 +00:00

public_types.md

[ty] Disambiguate classes that live in different modules but have the same fully qualified names (#20756)

2025-10-08 18:27:40 +01:00

statically_known_branches.md

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

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

sys_platform.md

Rename Red Knot (#17820)

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

sys_version_info.md

Rename Red Knot (#17820)

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

t_strings.md

[ty] Add support for PEP 750 t-strings (#20085)

2025-08-25 18:49:49 +00:00

terminal_statements.md

[ty] improve lazy scope place lookup (#19321)

2025-07-25 07:11:11 +00:00

ty_extensions.md

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

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

typed_dict.md

[ty] Further improve subscript assignment diagnostics (#21411)

2025-11-13 13:31:14 +01:00

union_types.md

[ty] Introduce TypeRelation::Redundancy (#20602)

2025-10-03 18:35:30 +01:00

unpacking.md

[ty] Infer more precise types for collection literals (#20360)

2025-09-17 18:51:50 -04:00

unreachable.md

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

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