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typing.Annotated: Add Metadata to Your Typehint

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typing.Annotated: Add Metadata to Your Typehint

If you want to add metadata to your typehint such as units of measurement, use typing.Annotated.

Annotated[T, x] allows static typechecking such as mypy to check T while safely ignoring x.

This method is available for Python 3.9 and above.

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