没有说明符的expect与else之间的区别？

Question

在Python的try、except块中，如果我可以只使用except:而不使用说明符，为什么else需要存在？你知道吗

Answer 1

你对try、except、else和finally的理解似乎是错的。你知道吗

下面是从https://docs.python.org/2/tutorial/errors.html来看它们是如何协同工作的：

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