FAQ: Why doesn't ty warn about missing type annotations?#2721
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sharkdp
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Feb 5, 2026
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| - [`ANN001`](https://docs.astral.sh/ruff/rules/missing-type-function-argument/): Missing type | ||
| annotation for function argument | ||
| - [`ANN002`](https://docs.astral.sh/ruff/rules/missing-type-args/): Missing type annotation for | ||
| `*args` | ||
| - [`ANN003`](https://docs.astral.sh/ruff/rules/missing-type-kwargs/): Missing type annotation for | ||
| `**kwargs` | ||
| - [`ANN201`](https://docs.astral.sh/ruff/rules/missing-return-type-undocumented-public-function/): | ||
| Missing return type annotation for public function | ||
| - [`ANN202`](https://docs.astral.sh/ruff/rules/missing-return-type-private-function/): Missing | ||
| return type annotation for private function | ||
| - [`RUF045`](https://docs.astral.sh/ruff/rules/implicit-class-var-in-dataclass/): Implicit class | ||
| variable in dataclass |
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@ntBre Do you maybe know of any other rules that we might want to refer to here?
ntBre
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Feb 5, 2026
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Summary
This came up multiple times on our issue tracker (#476 and duplicates thereof).
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