On Wed, Jan 22, 2020 at 3:45 AM Ivan Levkivskyi <levkivskyi@gmail.com> wrote:
I like this idea (I have suffered a lot implementing some tricky heuristics for _implicit_ type aliases in mypy :-)).
I will not have time for a detailed review soon, but I will be glad to sponsor this PEP.

Oh, in Shannon's PR I had offered to be sponsor. I'll leave the choice up to Shannon.

--Guido van Rossum (python.org/~guido)