for ... else ?

Gabriel Genellina gagsl-py2 at yahoo.com.ar
Tue Jun 12 20:55:36 CEST 2007


En Tue, 12 Jun 2007 10:41:28 -0300, Chris Mellon <arkanes at gmail.com>  
escribió:

> On 6/12/07, Gabriel Genellina <gagsl-py2 at yahoo.com.ar> wrote:
>> for x in iterable:
>>    do something with x
>> else:
>>    do something when there are no more x
>>
>>
>> You can think the above as:
>>
>> while there are still values in iterable:
>>    do something with the next value
>> else:
>>    do something when there are no more items
>>
>
> This is a good way of phrasing it and I hope I can remember it,
> because for..else always gives me trouble. To me, "else" indicates the
> negative condition and I intuitively associate it with executing the
> loop early, not normal exit. Personally, I think a different keyword
> (maybe "after"?) would have done a better job of clarifying this.

Yes, maybe, but it's hard to find a keyword equally applicable to "for"  
and "while" and creating two new keywords for essencially the same thing  
would be too much... Anyway it's too late to be changed now.

-- 
Gabriel Genellina




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