I know this has been asked before and I feel like this shouldn’t be an issue, yet (to me) it is, so I need to ask.

Consider the following:

class Point2D:
    def __init__(self, x: int, y: int):
        self.x = x
        self.y = y


class Point3D(Point2D):
    def __init__(self, z: int, *args, **kwargs):
        self.z = z
        super().__init__(*args, **kwargs)

Clearly Point3D.__init__ is mostly a proxy for Point2D.__init__.

My questions are:

1. how can I properly exert control over parameter order in Point3D.__init__, I want z to be the last parameter.

2. how to type the signature of Point3D.__init__ so that it mirrors the type hints in Point2D.__init__‘s signature?

I know I can use typing.Unpack and typing.TypedDict for typing *kwargs (and I think typing.NamedTuple for *args), but one of the problems is that all *args could also be passed as **kwargs, so how to deal with that possibility?

One option of course would be to use typing.Unpack with typing.TypedDict and disallow *args all together.