[Python-Dev] Termination of two-arg iter()

[Aahz]

On Tue, Jul 16, 2002, Delaney, Timothy wrote:
> From: Aahz [mailto:aahz@pythoncraft.com]
>> On Tue, Jul 16, 2002, Delaney, Timothy wrote:
>>> 
>>> I think the definition that some people are using is:
>       ^^^^^
>>> 
>>> An exhausted iterator is one for which StopIteration has 
>>> 
>>> An empty iterator OTOH is one which will raise 
>> 
>> In order to draw this distinction, you have to change the definition
>> of "iterator" that we've been using.  The sole protocol of iterator
>> to date has been the existence of a next() method that either returns
>> an item or raises StopIteration.  Making statements about what an
>> iterator *will* do counts as abuse IMO.  If you want a feature
>> like that, go use something else -- don't break the simplicity of
>> iterators.
>
> Aahz - you did read the next paragraph didn't you.
>
> "... I don't see a lot of point in distinguishing between the two
> above cases."

Sorry for being unclear; that was the generic "you", not pointing at you
(Tim) specifically.  s/you/one/
-- 
Aahz (aahz@pythoncraft.com)           <*>         http://www.pythoncraft.com/

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