python中这个class错在哪里啊？？

轻狂书生王子

1. class Animal(object):
   
2.     """Makes cute animals."""
   
3.     is_alive = True
   
4.     def __init__(self, name, age):
   
5.         self.name = name
   
6.         self.age = age
   
7.     # Add your method here!
   
8.         def description(self):
   
9.             print (self.name)
   
10.             print (self.age)
    
11. 
    
12. hippo = Animal("Jeffrey", 2)
    
13. hippo.description()

复制代码

为什么运行这个程序后，会提示  AttributeError: 'Animal' object has no attribute 'description'
但是没有问题啊！！！！求解释

comeheres

楼主犯了低级错误

1. 
   
2. class Animal(object):
   
3.     """Makes cute animals."""
   
4.     is_alive = True
   
5.     def __init__(self, name, age):
   
6.         self.name = name
   
7.         self.age = age
   
8.     # Add your method here!
   
9.     def description(self):
   
10.         print (self.name)
    
11.         print (self.age)
    
12. 
    
13. hippo = Animal("Jeffrey", 2)
    
14. hippo.description()
    

复制代码

   def description(self):
        print (self.name)
        print (self.age)
代码缩进的问题