Polymorphic case presentations

PCJ # 
class Dog (Object): 
    DEF __init __ (Self, name): 
        self.name name = 

    DEF RUN (Self): 
        Print ( "% S will only ordinary play"% self.name) 

class XiaoTiaoDog (Dog): 
    DEF RUN (Self): 
        Print ( "% S fly sky play" the self.name%) 

class the Person (Object): 
    DEF the __init __ (Self, name): 
        the self.name = name 

    DEF game_with_dog (Self, Dog): # Chuan into an ordinary dog or flying dog, here is the key to 
        print ( "% s% s happy and play"% (self.name, dog.name)) 
        # let the dog play 
        dog.run () 
# 1 to create a dog objects 
# wangcai = dog ( "Cai") 
wangcai = XiaoTiaoDog ( "Cai Fei") 
# 2, Xiao Ming to create a target 
xiaoming = Person ( "Bob") 

# 3, so that the method Xiaoming and dog playing 
xiaoming.game_with_dog(wangcai)