期望沒有說明符vs其他之間的區別？

Question

在Python的try,except塊，爲什麼else需要存在，如果我可以只使用沒有說明符的except:？

Answer 1

好像你瞭解try,except,else和finally是如何關閉的。

下面是它們是如何協同工作的總結，從看https://docs.python.org/2/tutorial/errors.html：

try: 
    #Try something that might raise an exception 
except <exception specifier>: 
    #Code here will only run if the exception that came up was the one specified 
except: 
    #Except clause without specifier will catch all exceptions 
else: 
    #Executed if try clause doesn't raise exception 
    #You can only have this else here if you also have except blocks 
finally: 
    #Runs no matter what