[Python-ideas] for/else syntax

[Steven D'Aprano]

On Thu, 8 Oct 2009 12:10:00 am Gerald Britton wrote:
> Are you sure?  Under what conditions would the "finally" clause be
> bypassed?

Are you talking about the existing try...finally clause, or the 
hypothetical "let's rename for...else to for...finally" clause?

If the second, then it would be bypassed under exactly the same 
conditions as the else in for...else is bypassed. E.g.:

for x in [1, 2, 3]:
    raise Exception
else:
    print "This is never printed"

def test():
    for x in [1, 2, 3]:
        return x
    else:
        print "This is never printed"


Renaming 'for...else' to 'for...finally' doesn't turn it into a try 
block. The semantics remain the same.



-- 
Steven D'Aprano