This is exactly what happens starting with Python 3.7, which implements PEP 563 [0]; you just need to enable it by importing annotations from __future__. Starti

This is exactly what happens starting with Python 3.7, which implements PEP 563 [0]; you just need to enable it by importing annotations from __future__. Starting from Python 3.10 that will be the default. [0] [0] https://docs.python.org/3/whatsnew/3.7.html#pep-563-postponed-evaluation-of-annotations https://docs.python.org/3/whatsnew/3.7.html#pep-563-postpone...