python 父类方法中使用不同的子类中的不同类对象，
文章由Byrx.net分享于2019-12-14 09:12:28
python 父类方法中使用不同的子类中的不同类对象，
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1 # coding:utf-8
2
3
4 class Animal(object):
5 def __init__(self):
6 self._name =
None
7 self._f =
None
8
9 def eat(self):
10 print(
"%s吃%s" %
(self._name, self._f().food()))
11
12
13 class Dog(Animal):
14 def __init__(self):
15 Animal.
__init__(self)
16 self._f =
DogFood
17 self._name =
"狗"
18
19
20 class DogFood():
21 def food(self):
22 return "狗粮"
23
24
25 class Cat(Animal):
26 def __init__(self):
27 Animal.
__init__(self)
28 self._name =
"猫"
29 self._f =
CatFood
30
31
32 class CatFood():
33 def food(self):
34 return "猫粮"
35
36
37 dog =
Dog()
38 dog.eat()
39 cat =
Cat()
40 cat.eat()
View Code
狗吃狗粮
猫吃猫粮
![]()
1 # coding:utf-8
2
3
4 class CatFood():
5 def food(self, food_name):
6 self.food_name =
food_name
7
8 cf =
CatFood
9
10 cf1 =
CatFood()
11 cf1.food(
"鱼")
12 cf2 =
CatFood()
13 cf2.food(
"粥")
14
15 print(cf1.food_name)
16 print(cf2.food_name)
View Code
鱼
粥
![]()
1 # coding:utf-8
2
3
4 class CatFood():
5 def food(self, food_name):
6 self.food_name =
food_name
7
8 cf =
CatFood
9
10 cf1 =
CatFood()
11 cf1.food(
"鱼")
12 cf2 =
CatFood()
13 cf2.food(
"粥")
14
15 print(CatFood)
16 print(cf)
17 print(cf1)
View Code
<class '__main__.CatFood'>
<class '__main__.CatFood'>
<__main__.CatFood object at 0x000000000279B320>
cf CatFood 是类对象
cf1是实例对象
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