Call the parent class's July 28, 2019 in a subclass method happy birthday

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('%s is running'%self.name)

class Subway(Vehicle):
    def __init__(self,name,speed,load,power,line):
        # self.name=name
        # self.speed=speed
        # Self.load = Load 
        # self.power = Power 
        Vehicle. The __init__ (self, name, Speed, Load, Power) # subclass call parent class method, the above is that code, self is needed here, because it is in the object class method calls 
        self.line = Line 

    DEF show_info (Self):
         Print (the self.name, self.speed, self.load, self.power, self.line) 

    DEF RUN (Self): 
        Vehicle.run ( Self) # Note transmitting Self 

Line13 = Subway ( ' bjdt ' , ' 100km / S ' , 5000, ' E ' , ' 13 is # ' )

line13.show_info()

line13.run()

》》》

bjdt 100km/s 5000 E 13#
bjdt is running

 

super () method

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('%s is running'%self.name)

class Subway(Vehicle):
    def __init__(self,name,speed,load,power,line):
        # self.name=name
        # self.speed=speed
        # Self.load = Load 
        # self.power = Power 
        # Vehicle .__ the init __ (self, name, Speed, Load, Power) # parent method call subclass is part of the code above, self is needed here, because the method call in the object class 
        super (). the __init__ (name, Speed, Load, Power) # super transfer method without self, parent class methods can invoke the super method 
        self.line = Line 

    DEF show_info (Self):
         Print (self.name, self.speed, self.load, self.power, self.line) 

    DEF RUN (Self):
         # Vehicle.run (Self) Note # transfer Self 
        Super () RUN (). # Super methods without pass self, a method can be called directly by a super parent method 
Line13 = Subway ( ' bjdt ' , '100km/s',5000,'E','13#')

line13.show_info()

line13.run()

>>>

bjdt 100km/s 5000 E 13#
bjdt is running