[issue41559] Add support for PEP 612 to typing.py

[Guido van Rossum]

Guido van Rossum <guido at python.org> added the comment:

Thanks for working on this -- let me know when you have a question for me. Once this is ready we should also add it to the typing_extensions module so people can use it on older Python versions. (https://github.com/python/typing/tree/master/typing_extensions)

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