[Python-Dev] PEP 340 -- concept clarification

[Phillip J. Eby]

At 05:17 PM 5/3/05 -0700, Guido van Rossum wrote:
>(So do you want this feature now or not? Earlier you said it was no big deal.)

It *isn't* a big deal; but it'd still be nice, and I'd happily volunteer to 
do the actual implementation of the 'close()' method myself, because it's 
about the same amount of work as updating PEP 333 and sorting out any 
political issues that might arise therefrom.  :)


>But I kind of doubt that it's an issue; you'd have to have a
>try/except catching StopIteration around a yield statement that
>resumes the generator before this becomes an issue, and that sounds
>extremely improbable.

But it does exist, alas; see the 'itergroup()' and 'xmap()' functions of 
this cookbook recipe:

     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/66448/

Or more pointedly, the 'roundrobin()' example in the Python 2.4 documentation:

     http://www.python.org/doc/lib/deque-recipes.html

And there are other examples as well:

     http://www.faqts.com/knowledge_base/view.phtml/aid/13516
     http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/141934