python - Try-Except-Finally 语句的过时书籍描述

Question

我正在关注 Apress，从新手到专业的 Python 入门 这本书。据说:

finally. You can use try/finally if you need to make sure that some code (for example, cleanup code) is executed regardless of whether an exception is raised or not. This code is then put in the finally clause. Note that you cannot have both except clauses and a finally clause in the same try statement—but you can put one inside the other.

我试过这段代码:

def someFunction():
    a = None
    try:
        a = 1 / 0
    except ZeroDivisionError, e:
        print 'Yesss'
        print e
    finally:
        print 'Cleanup'
        del a

if __name__ == '__main__':
    someFunction()

...输出是

Yesss
integer division or modulo by zero
Cleanup

在这里，我在同一个try 段中使用了except 和finally，不是吗？并且代码按预期工作正常。我不太明白书上说的是什么!

有人请澄清。谢谢。

Answer 1

自 python 2.5 以来已修复此问题，并在 documentation 中明确指出

换句话说，你的书不正确/过时了