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unnecessary-type-union (PYI055)#

Derived from the flake8-pyi linter.

Fix is sometimes available.

What it does#

Checks for the presence of multiple types in a union.

Why is this bad?#

type[T | S] has identical semantics to type[T] | type[S] in a type annotation, but is cleaner and more concise.


field: type[int] | type[float] | str

Use instead:

field: type[int | float] | str