反射 

 1 # 反射:
 2 # hasattr() 判断一个对象里是否有对应的 name_str 字符串的方法
 3 # getattr() 根据字符串获得对象里的对应的方法的内存地址  后面+()可调用
 4 # setattr(obj, 'name', value) 通过字符串设置一个值
 5 # delattr(obj, "str")
 6 def eat(self):
 7     print("eat")
 8 
 9 class Dog(object):
10     def __init__(self, name, age):
11         self.name = name
12         self.age = age
13 
14     def talk(self, who):
15         print("%s is talking wangwangwnag with %s!"% (self.name, who))
16 
17 d = Dog("L", 11)
18 action = input("action:>>").strip()
19 
20 if hasattr(d, action):
21     func = getattr(d, action)
22     func("Jy")
23     print(d.name)
24     delattr(d, 'name')
25 else:
26     setattr(d, action, eat)
27     func = getattr(d, action)
28     func(d)
29 print(d.name)

 

posted @ 2017-07-03 16:08  Bird_getUpEarly  阅读(127)  评论(0)    收藏  举报