Python基础_类的继承

###Python 类的继承###

class Bike:
    compose = ['frame','wheel','padal']
    def __init__(self):
        self.other = 'basket'  #定义实例属性
    def use(self,time):
        print('you are rid {}m'.format(time*100))

class Share_bike(Bike):
    def cost(self,hour):
        print('you spent {}'.format(hour*2))
bike = Share_bike()
print(bike.other)
bike.cost(2)

#在新类Share_bike后面的括号中加入了Bike,表示Share_bike继承了Bike父类.父类的变量和方法可以完全被子类继承,在特殊情况下,也可以对其进行覆盖.