Summary

Playground*

# ruff: noqa: D100, D101, CPY001
__all__ = (
    "DialogProtocol",
    "DialogProtocol",
)


class DialogProtocol: ...

Neither Ruff nor PyCharm told me anything about this, only CodeRabbit was able to detect it.

I think it would be possible to add such a rule, especially since it is not so difficult to implement.