TypeError: __getattr__() takes 0 positional arguments but 1 was given

What it does

Checks for imports that fail when calling a module-level __getattr__ function.

Why is this bad?

If a module defines __getattr__, Python calls it when a from import requests a name that is not otherwise defined. The import raises an exception if __getattr__ cannot accept the requested name.

Examples

module.py:

def __getattr__() -> str:
    return "fallback"

main.py:

# TypeError: __getattr__() takes 0 positional arguments but 1 was given
from module import missing  # error