no error when name used before defined

[DetachHead]

foo() # runtime NameError: name 'foo' is not defined

def foo():
    ...

https://mypy-play.net/?mypy=latest&python=3.10&gist=bc5b1e2767072f474d0bdf1ff2a8190e

[daredevil3435]

I am very curious about this program, could you guide me more I want to contribute. This will be my first time doing it

[KotlinIsland]

Also:

print(a)  # no error
a: int = 1

[JelleZijlstra]

Duplicate of #686