かけ算

README.rst

result

♥♥

鬱

鬱

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mul.py

# -*- coding:utf-8 -*- 


BROKEN_HEART = "鬱"


class Person(object):
    def __mul__(self, other):
        if not isinstance(other, Person):
            return BROKEN_HEART
        return "♥♥"

    def __rmul__(self, other):
        if not isinstance(other, Person):
            return BROKEN_HEART
        return None


def main():
    drillbits, pasberth = Person(), Person()
    print(drillbits * pasberth)
    feiz = Person()
    print(feiz * None)
    print(0 * feiz)


if __name__ == "__main__":
    main()