'Cannot determine type of "<symbol>"' when circular dependencies

[KotlinIsland]

Is this even an error that you care about or throw intentionally?

my-app/
├─ main.py
├─ a.py
├─ b.py

main.py:

from b import B
from a import b

main = B()

a.py:

from b import b as b
from main import main

reveal_type(main)

b.py:

b = 1

class B:
    ...

> mypy main.py
a.py:4: error: Cannot determine type of "main"