实例化类时报:TypeError: __init__() missing 1 required positional argument:

chase001

为什么实例化类时报:TypeError: __init__() missing 1 required positional argument:

1. class Counter:
   
2.         def __init__(self,counter):
   
3.                 self.counter = counter
   
4.         def __setattr__(self, name, value):
   
5.                 self.counter += 1
   
6.                 super().__setattr__(name, value)
   
7.         def __delattr__(self, name):
   
8.                 self.counter -= 1
   
9.                 super().__delattr__(name)
   
10. 
    
11. 
    

复制代码

1. >>>c = Counter()
   
2. Traceback (most recent call last):
   
3.   File "<pyshell#16>", line 1, in <module>
   
4.     c = Counter()
   
5. TypeError: __init__() missing 1 required positional argument: 'counter'
   

复制代码

SixPy

def __init__(self,counter):

老甲鱼与小甲鱼

提示很明白了啊，missing 1 required positional argument缺少一个参数

老甲鱼与小甲鱼

c = Counter()这个括号里面应该给个参数