can not import Protocol from typing

If it does not exist in typing do

pip install typing_extensions

from typing_extensions import Protocol

Depending upon OS and Python version Protocol class might be within typing module or in typing_extensions.

As of January 20, 2019, PEP 544's status is Draft. As far as I understand, it's not implemented in CPython yet.

UPD: it should work since Python 3.8, try updating.