Object oriented python learning -66 3 - Polymorphism

　　　　　　　　　　　　　　　　　Polymorphism

 

 

 

 

1. What is polymorphic

By different instance of the class object obtained with a method call, perform different logic.

 

For example:

class H2O:
     DEF  the __init__ (Self, type, TEM): 
        self.type = type 
        self.tem = TEM
     DEF turn_ice (Self):
         IF self.tem < 0:
             Print ( ' % S, ice cold become ' % Self. TEM)
         elif self.tem> 0:
             Print ( ' % S, the liquefied into water ' % self.tem) 

class Ice (H2O):
     Pass 
class water (H2O):
     Pass 

I1 = Ice ( '冰',-20)
w1 = Water('水',20)

def func(obj):
    obj.turn_ice()

func(i1)
func(w1)

operation result:

-20 , become frozen ice
 20 , the water liquefied into a 

Process finished with exit code 0