python面向对象的三大特征--继承子类调用父类方法

#在子类中调用父类方法

class Vehicle:

    country="China"


    def __init__(self,name,speed,load,power):
        self.name=name
        self.speed=speed
        self.load=load
        self.power=power


    def run(self):
        print("开动啦")


class Subway(Vehicle):

    def __init__(self,name,speed,load,power,line):
        Vehicle.__init__(self,name,speed,load,power)


        # self.name = name
        # self.speed = speed
        # self.load = load
        # self.power = power
        self.line=line


    def show_info(self):
        print(self.name,self.line)

    def run(self):
        Vehicle.run(self)
        print("%s开动了"%self.name)


line13=Subway("成都","1000m/s",1000000000,"电",13)

line13.show_info()


line13.run()

 

#使用super方法调用父类方法
class Vehicle:

    country="China"


    def __init__(self,name,speed,load,power):
        self.name=name
        self.speed=speed
        self.load=load
        self.power=power


    def run(self):
        print("开动啦")


class Subway(Vehicle):

    def __init__(self,name,speed,load,power,line):
        #Vehicle.__init__(self,name,speed,load,power)

        #super().__init__(name,speed,load,power)   super(__class__,self).__init__(name,speed,load,power)
        super(Subway,self).__init__(name,speed,load,power)


        # self.name = name
        # self.speed = speed
        # self.load = load
        # self.power = power
        self.line=line


    def show_info(self):
        print(self.name,self.line)

    def run(self):
        # Vehicle.run(self)
        super().run()
        print("%s开动了"%self.name)


line13=Subway("成都","1000m/s",1000000000,"电",13)

line13.show_info()


line13.run()
print(line13.__class__)