This would seem to imply

pylint

needs transitive deps (change

a.py

and

c.py

should see it)

# a.py
A = NotImplemented

# b.py
from .a import A

# c.py
from .b import A

def foo():
    raise A

$ pylint c.py
...
c.py:4: [E0702(raising-bad-type), foo] Raising NotImplementedType while only classes or instances are allowed