class MyClass:
    def __init__(self, x: int):
        self.whatever: int = x

def foo(x: MyClass) -> int:
    return x.whatevr

Any decent IDE would give you an error for unresolved attribute. Likewise it would warn you of type error if the type of x.whatever didn’t match the return type of foo()

It’s python, just use type hinting already and your linter will catch that.

Also some winters can look at the use of food and see the type being passed in.

Not with an example that simple and poor, no.

If you have done the minimum and at least set a type hint, or if your ide is smart enough to check what calls the function and what it passes, then it’ll be flagged.

Always love seeing the trope:

*writes awful code*

See! This is why this language sucks!