ruff/crates/ty_python_semantic/resources/mdtest at 5a55bab3f366d3d9a7cf48c7a34b55535d1b1709 - ruff - Gitea: Git with a cup of tea

Cyclic0007/ruff

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David Peter 5a55bab3f3 [ty] Infer single-valuedness for enums based on int/str (#19510 )

## Summary

We previously didn't recognize `Literal[Color.RED]` as single-valued, if
the enum also derived from `str` or `int`:
```py
from enum import Enum

class Color(str, Enum):
    RED = "red"
    GREEN = "green"
    BLUE = "blue"

def _(color: Color):
    if color == Color.RED:
        reveal_type(color)  # previously: Color, now: Literal[Color.RED]
```

The reason for that was that `int` and `str` have "custom" `__eq__` and
`__ne__` implementations that return `bool`. We do not treat enum
literals from classes with custom `__eq__` and `__ne__` implementations
as single-valued, but of course we know that `int.__eq__` and
`str.__eq__` are well-behaved.

## Test Plan

New Markdown tests.

2025-07-23 15:55:42 +02:00

..

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

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

[ty] Homogeneous and mixed tuples (#18600 )

2025-06-20 18:23:54 -04:00

[ty] Homogeneous and mixed tuples (#18600 )

2025-06-20 18:23:54 -04:00

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

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

boundness_declaredness

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

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

[ty] Reachability analysis for isinstance(…) branches (#19503 )

2025-07-23 13:06:30 +02:00

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

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

[ty] Enum literal types (#19328 )

2025-07-15 21:31:53 +02:00

Rename Red Knot (#17820 )

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

[ty] Enum literal types (#19328 )

2025-07-15 21:31:53 +02:00

[ty] Pass down specialization to generic dataclass bases (#19472 )

2025-07-21 20:51:58 +02:00

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

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

lint on the global keyword if there's no explicit definition in the global scope

2025-07-15 16:56:54 -07:00

[ty] Correctly handle calls to functions marked as returning Never / NoReturn (#18333 )

2025-07-04 11:52:52 -07:00

ty_python_semantic: add union type context to function call type errors

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

[ty] support del statement and deletion of except handler names (#18593 )

2025-06-12 07:44:42 -07:00

[ty] Make tuple subclass constructors sound (#19469 )

2025-07-21 21:25:11 +00:00

[ty] Support empty function bodies in if TYPE_CHECKING blocks (#19372 )

2025-07-16 14:48:04 -06:00

[ty] Improve protocol member type checking and relation handling (#18847 )

2025-06-29 10:46:33 +00:00

[ty] Enum literal types (#19328 )

2025-07-15 21:31:53 +02:00

lint on the global keyword if there's no explicit definition in the global scope

2025-07-15 16:56:54 -07:00

[ty] Understand classes that inherit from subscripted Protocol[] as generic (#17832 )

2025-05-09 17:39:15 +01:00

Rename Red Knot (#17820 )

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

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

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

Rename Red Knot (#17820 )

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

[ty] perform type narrowing for places marked global too (#19381 )

2025-07-22 16:42:10 -07:00

Rename Red Knot (#17820 )

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

[ty] Sync vendored typeshed stubs (#19461 )

2025-07-21 14:01:42 +01:00

[ty] Do not carry the generic context of Protocol or Generic in the ClassBase enum (#17989 )

2025-05-22 21:37:03 -04:00

[ty] Fix false positives when subscripting an object inferred as having an Intersection type (#18920 )

2025-06-24 18:39:02 +00:00

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

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

type_compendium

[ty] Make tuple subclass constructors sound (#19469 )

2025-07-21 21:25:11 +00:00

[ty] Enum literal types (#19328 )

2025-07-15 21:31:53 +02:00

type_properties

[ty] Infer single-valuedness for enums based on int/str (#19510 )

2025-07-23 15:55:42 +02:00

type_qualifiers

[ty] Disallow illegal uses of ClassVar (#19483 )

2025-07-22 14:21:29 +02:00

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

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

[ty] Add hint if async context manager is used in non-async with statement (#18299 )

2025-05-26 21:34:47 +02:00

.mdformat.toml

Rename Red Knot (#17820 )

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

attributes.md

[ty] Expansion of enums into unions of literals (#19382 )

2025-07-21 19:37:55 +02:00

cycle.md

[ty] Add cycle handling for unpacking targets (#18078 )

2025-05-13 21:27:48 +00:00

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] make del x force local resolution of x in the current scope (#19389 )

2025-07-18 14:58:32 -07:00

deprecated.md

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

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

descriptor_protocol.md

[ty] Fix descriptor lookups for most types that overlap with None (#19120 )

2025-07-05 19:34:23 +01:00

enums.md

[ty] Detect enums if metaclass is a subtype of EnumType/EnumMeta (#19481 )

2025-07-23 08:46:51 +02:00

exhaustiveness_checking.md

[ty] Reachability analysis for isinstance(…) branches (#19503 )

2025-07-23 13:06:30 +02:00

final.md

Rename Red Knot (#17820 )

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

instance_layout_conflict.md

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

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

intersection_types.md

[ty] Expansion of enums into unions of literals (#19382 )

2025-07-21 19:37:55 +02:00

invalid_syntax.md

Rename Red Knot (#17820 )

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

known_constants.md

Rename Red Knot (#17820 )

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

mdtest_config.md

Rename Red Knot (#17820 )

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

mdtest_custom_typeshed.md

[ty] Fix duplicate diagnostics for unresolved module when an import from statement imports multiple members (#17886 )

2025-05-06 12:37:10 +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] Implement implicit inheritance from Generic[] for PEP-695 generic classes (#18283 )

2025-05-26 20:40:16 +01:00

named_tuple.md

[ty] Add generic inference for dataclasses (#18443 )

2025-06-03 09:59:43 -07:00

overloads.md

[ty] Add support for @staticmethods (#18809 )

2025-06-20 10:38:17 +02:00

pep695_type_aliases.md

[ty] Support typing.TypeAliasType (#18156 )

2025-05-19 16:36:49 +02:00

properties.md

ty_python_semantic: add union type context to function call type errors

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

protocols.md

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

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

public_types.md

[ty] Infer nonlocal types as unions of all reachable bindings (#18750 )

2025-06-26 12:24:40 +02:00

statically_known_branches.md

[ty] Infer nonlocal types as unions of all reachable bindings (#18750 )

2025-06-26 12:24:40 +02:00

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

terminal_statements.md

[ty] Correctly handle calls to functions marked as returning Never / NoReturn (#18333 )

2025-07-04 11:52:52 -07:00

type_api.md

[ty] eliminate is_fully_static (#18799 )

2025-06-24 18:02:05 -07:00

typed_dict.md

[ty] Reduce false positives for TypedDict types (#19354 )

2025-07-15 12:47:19 +01:00

union_types.md

[ty] Expansion of enums into unions of literals (#19382 )

2025-07-21 19:37:55 +02:00

unpacking.md

[ty] Support variable-length tuples in unpacking assignments (#18948 )

2025-06-27 15:29:04 -04:00

unreachable.md

[ty] Infer nonlocal types as unions of all reachable bindings (#18750 )

2025-06-26 12:24:40 +02:00