Shunsuke Shibayama dfd8eaeb32 [red-knot] detect unreachable attribute assignments (#16852) ...

## Summary

This PR closes #15967.

Attribute assignments that are statically known to be unreachable are
excluded from consideration for implicit instance attribute type
inference. If none of the assignments are found to be reachable, an
`unresolved-attribute` error is reported.

## Test Plan

[A test
case](https://github.com/astral-sh/ruff/blob/main/crates/red_knot_python_semantic/resources/mdtest/attributes.md#attributes-defined-in-statically-known-to-be-false-branches)
marked as TODO now work as intended, and new test cases have been added.

---------

Co-authored-by: David Peter <mail@david-peter.de>

2025-04-14 09:23:20 +02:00

..

annotations

red_knot_python_semantic: replace one use of "old" secondary diagnostic messages

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assignment

[red-knot] Don't infer Todo for quite so many tuple type expressions (#17116)

2025-04-01 15:44:02 +01:00

binary

[red-knot] Fix inference for pow between two literal integers (#17161)

2025-04-02 21:25:57 +00:00

boolean

[red-knot] Statically known branches (#15019)

2024-12-21 11:33:10 +01:00

boundness_declaredness

[red-knot] detect invalid return type (#16540)

2025-03-12 01:58:59 +00:00

call

[red-knot] Specialize str.startswith for string literals (#17351)

2025-04-11 16:26:45 +02:00

comparison

[red-knot] fix eager nested scopes handling (#16916)

2025-03-28 11:11:56 -04:00

comprehensions

[red-knot] detect invalid return type (#16540)

2025-03-12 01:58:59 +00:00

conditional

[red-knot] visibility_constraint analysis for match cases (#17077)

2025-04-03 11:15:33 +00:00

declaration

[red-knot] Avoid undeclared path when raising conflicting declarations (#14958)

2024-12-17 09:49:39 +05:30

diagnostics

[red-knot] Document current state of attribute assignment diagnostics (#16746)

2025-03-14 20:34:43 +01:00

directives

[red-knot] Add support for assert_never (#17287)

2025-04-08 09:31:49 +02:00

doc

red_knot_python_semantic: replace one use of "old" secondary diagnostic messages

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exception

Fixing various spelling errors (#16924)

2025-03-23 08:08:40 +00:00

expression

[red-knot] Add initial support for * imports (#16923)

2025-03-24 17:15:58 +00:00

function

red_knot_python_semantic: remove the "old" secondary message type

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generics

red_knot_python_semantic: remove the "old" secondary message type

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import

Use python.typing.org for typing documentation links (#17323)

2025-04-09 20:38:20 +02:00

literal

[red-knot] Migrate bool/str/repr unit tests to Markdown tests (#15534)

2025-01-16 11:21:56 -08:00

loops

[red-knot] Handle unions of callables better (#16716)

2025-03-17 10:35:52 -04:00

narrow

Revert "[red-knot] Type narrowing for assertions (#17149)" (#17335)

2025-04-10 11:06:25 -04:00

regression

[red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890)

2025-02-04 08:27:17 +01:00

scopes

[red-knot] Decorators and properties (#17017)

2025-04-02 09:27:46 +02:00

shadowing

[red-knot] Merge Markdown code blocks inside a single section (#15950)

2025-02-05 22:26:15 +01:00

snapshots

red_knot_python_semantic: remove the "old" secondary message type

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stubs

[red-knot] Allow explicit specialization of generic classes (#17023)

2025-04-09 11:18:46 -04:00

subscript

[red-knot] Decorators and properties (#17017)

2025-04-02 09:27:46 +02:00

suppressions

Use python.typing.org for typing documentation links (#17323)

2025-04-09 20:38:20 +02:00

type_of

[red-knot] Method calls and the descriptor protocol (#16121)

2025-02-20 23:22:26 +01:00

type_properties

Use python.typing.org for typing documentation links (#17323)

2025-04-09 20:38:20 +02:00

type_qualifiers

[red-knot] Preliminary tests for typing.Final (#15917)

2025-03-14 12:30:13 +01:00

unary

[red-knot] Add __init__ arguments check when doing try_call on a class literal (#16512)

2025-04-08 17:26:20 -04:00

with

[red-knot] detect invalid return type (#16540)

2025-03-12 01:58:59 +00:00

.mdformat.toml

[red-knot] have mdformat wrap mdtest files to 100 columns (#14020)

2024-10-31 21:00:51 +00:00

attributes.md

[red-knot] detect unreachable attribute assignments (#16852)

2025-04-14 09:23:20 +02:00

decorators.md

red_knot_python_semantic: replace one use of "old" secondary diagnostic messages

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descriptor_protocol.md

[red-knot] Decorators and properties (#17017)

2025-04-02 09:27:46 +02:00

final.md

[red-knot] Add support for @final classes (#15070)

2024-12-19 21:02:14 +00:00

intersection_types.md

[red-knot] add test cases result in false positive errors (#16856)

2025-03-20 17:17:54 +00:00

invalid_syntax.md

[red-knot] Understand typing.Callable (#16493)

2025-03-08 03:58:52 +00:00

known_constants.md

[red-knot] Add rule invalid-type-checking-constant (#16501)

2025-03-04 19:49:34 +00:00

mdtest_config.md

[red-knot] Add missing imports in mdtests (#15869)

2025-02-03 09:27:29 +00:00

mdtest_custom_typeshed.md

[red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890)

2025-02-04 08:27:17 +01:00

metaclass.md

[red-knot] detect invalid return type (#16540)

2025-03-12 01:58:59 +00:00

mro.md

[red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890)

2025-02-04 08:27:17 +01:00

pep695_type_aliases.md

[red-knot] Decorators and properties (#17017)

2025-04-02 09:27:46 +02:00

properties.md

red_knot_python_semantic: replace one use of "old" secondary diagnostic messages

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protocols.md

[red-knot] Make' Type::in_type_expression()' exhaustive for Type::KnownInstance (#16836)

2025-03-19 07:36:28 -07:00

slots.md

[red-knot] fix: improve type inference for binary ops on tuples (#16725)

2025-03-14 12:29:57 +01:00

statically_known_branches.md

[red-knot] Reachability analysis (#17199)

2025-04-08 08:37:20 +02:00

sys_platform.md

[red-knot] Specialize str.startswith for string literals (#17351)

2025-04-11 16:26:45 +02:00

sys_version_info.md

[red-knot] Decorators and properties (#17017)

2025-04-02 09:27:46 +02:00

terminal_statements.md

[red-knot] Avoid unresolved-reference in unreachable code (#17169)

2025-04-03 16:52:11 +02:00

type_api.md

Fix CallableTypeOf display signature (#17235)

2025-04-06 18:12:52 +01:00

union_types.md

[red-knot] add special case for float/complex (#16166)

2025-02-14 12:24:10 -08:00

unpacking.md

[red-knot] Support unpacking with target (#16469)

2025-03-08 02:36:35 +00:00

unreachable.md

[red-knot] Silence errors in unreachable type annotations / class bases (#17342)

2025-04-10 22:47:47 +02:00