Callable objects (Reference)

This page documents stdlib traits for callable objects.

Callable0 / Callable1 / Callable2

These model “objects that can be called” like obj(), obj(x), obj(x, y).

• Callable0[R]
• Hook: __call__(self) -> R
• Callable1[A, R]
• Hook: __call__(self, arg: A) -> R
• Callable2[A, B, R]
• Hook: __call__(self, a: A, b: B) -> R