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ruff/crates/ty_python_semantic/resources
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David Peter 149350bf39
[ty] Enforce typing.Final (#19178) 
## Summary

Emit a diagnostic when a `Final`-qualified symbol is modified. This
first iteration only works for name targets. Tests with TODO comments
were added for attribute assignments as well.

related ticket: https://github.com/astral-sh/ty/issues/158

## Ecosystem impact

Correctly identified [modification of a `Final`
symbol](7b4164a5f2/sphinx/__init__.py (L44))
(behind a `# type: ignore`):
```diff
- warning[unused-ignore-comment] sphinx/__init__.py:44:56: Unused blanket `type: ignore` directive
```
And the same
[here](5471a37e82/src/trio/_core/_run.py (L128)):
```diff
- warning[unused-ignore-comment] src/trio/_core/_run.py:128:45: Unused blanket `type: ignore` directive
```

## Test Plan

New Markdown tests
2025-07-08 16:26:09 +02:00
..
corpus Move corpus tests to ty_python_semantic (#18609) 2025-06-11 08:55:30 +02:00
mdtest [ty] Enforce typing.Final (#19178) 2025-07-08 16:26:09 +02:00
primer [ty] Add separate CI job for memory usage stats (#19134) 2025-07-07 12:17:02 -04:00
README.md

README.md

Markdown files within the mdtest/ subdirectory are tests of type inference and type checking; executed by the tests/mdtest.rs integration test.

See crates/ty_test/README.md for documentation of this test format.