demo_eager 

 1# no from __future__ import annotations!
 2from typing import List
 3from typing import Literal
 4
 5
 6def foo(x: Literal["r", "w"]) -> str | int:
 7    raise NotImplementedError
 8
 9
10def bar(x: list["int"], /) -> List["int"]:
11    raise NotImplementedError
def foo(x: Literal['r', 'w']) -> str | int: 
7def foo(x: Literal["r", "w"]) -> str | int:
8    raise NotImplementedError
def bar(x: list[int], /) -> List[int]: 
11def bar(x: list["int"], /) -> List["int"]:
12    raise NotImplementedError