TIL: Extending operand usage in Python

If you were to write some Python like this…

class Person():
    pass

your_mom = Person()

assert your_mom * 100 == '100 people'

you’d get a TypeError

That’s to be expected. Your mom doesn’t know how to handle the * operator.

You can teach her, though.

class Person():
    def __mul__(self, i: int) -> str:
        return f'{i} people'

your_mom = Person()

assert your_mom * 100 == '100 people'