Hi,
The Python Steering Council accepts PEP 585 "Type Hinting Generics In Standard Collections": https://www.python.org/dev/peps/pep-0585/
Congrats Ćukasz Langa for your tenacity! (PEP written one year ago.)
Thanks also to everyone who was involved in the discussion to help to get a better PEP ;-)
It seems Guido van Rossum is already working on implementing the PEP:
* https://github.com/python/cpython/pull/18239 * https://bugs.python.org/issue39481
Victor