Previous PEPs to add pattern matching — PEP 275 and PEP 3103, proposed in 2001 and 2006 respectively — were turned down due to lack of popular support.PEP 3103 was drafted by Python creator ...

The syntax of Python type hints. ... When you add from __future__ import annotations at the top of a module, annotations are now resolved lazily for that module—just as if they were string ...