python学习-66 面向对象3 - 多态

class H2O:
    def __init__(self,type,tem):
        self.type = type
        self.tem = tem
    def turn_ice(self):
        if self.tem < 0:
            print(‘%s,冻成为冰了‘ % self.tem)
        elif self.tem >0:
            print(‘%s,液化成水了‘ % self.tem)

class Ice(H2O):
    pass
class Water(H2O):
    pass

i1 = Ice(‘冰‘,-20)
w1 = Water(‘水‘,20)

def func(obj):
    obj.turn_ice()

func(i1)
func(w1)

-20,冻成为冰了
20,液化成水了

Process finished with exit code 0