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I don't know the latest but PEP 484 writes:

> While these [type] annotations are available at runtime through the usual __annotations__ attribute, no type checking happens at runtime. Instead, the proposal assumes the existence of a separate off-line type checker which users can run over their source code voluntarily.

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Right, it’s definitely still a voluntary feature. What I meant is if you opt in and make it part of your project’s standard build procedure for python code, you effectively get the behavior and benefits of “compile-time type checking” (to the extent that you actually use type annotations in your code).

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