Python多态

 1 class Animal: 2     def move(self): 3         PRint('Animal is moving') 4  5 class Dog: 6     def move(self): 7         print('Dog is running') 8  9 class Fish:10     def move(self):11         print('Fish is swimming')12 13 Animal().move()14 Dog().move()15 Fish().move()

1 #在子类中：2 3 class child:4     def start(self):5         print('....')6         super().start()7         print('......')

class Animal:    def move(self):        print('Animal is moving')class Dog:    def move(self):        print('Dog is running')class Fish:    def move(self):        print('Fish is swimming')def move(obj):        #obj为实例参数    obj.move()            move(Animal())move(Dog())move(Fish())

class Moveable:    def move(self):        print('Move...')class MoveOnFeet(Moveable):    def move(self):        print("Move on Feet.")class MoveOnWheel(Moveable):    def move(self):        print("Move on Wheels.")        #-------------------------------------------------------------------        class MoveObj:    def set_move(self,moveable):                                #moveable为类        self.moveable = moveable()    def move(self):        self.moveable.move()                               #通过moveable实例调用到不同的类class Test:    def move(slef):        print("I'm Fly.")if __name__ == '__main__':    m = MoveObj()        m.set_move(Moveable)    m.move()        m.set_move(MoveOnFeet)    m.move()        m.set_move(MoveOnWheel)    m.move()        m.set_move(Test)    m.move()

def movea():
print('Move a.')

def moveb():
print('Move b.')

class MoveObj:
def __init__(self,moveable): #moveable为函数参数
self.moveable = moveable #绑定函数名参数
self.moveable() #调用函数

if __name__ == '__main__':
a = MoveObj(movea)
b = MoveObj(moveb)