[Python-ideas] Possible new itertool: comm()

Ethan Furman ethan at stoneleaf.us
Tue Jan 6 20:02:16 CET 2015

On 01/06/2015 10:47 AM, Paul Moore wrote:
> On 6 January 2015 at 18:43, Ethan Furman wrote:
>> Yup, it sure does.  Guess I should have paid more attention to that niggling feeling that I was missing something.  ;)
>> On the other hand, I figured even if I was wrong it wouldn't hurt to increase awareness about the change to generators.
> I should probably point out that when writing my code, I was conscious
> of the generator change and took special case of catching all of the
> StopIterations that might leak out. It's probably good that I was made
> to think carefully about it, but all those try...except blocks sure
> look ugly.

Having looked more closely at your code, I don't see any thing that wouldn't have had to be there even without the
generator change because your exhausting two iterators.

> (And Steven's version with its sentinel value doesn't look
> much better, with all those comparisons against a magic value

I think I prefer his, although I would rename MISSING to FINISHED.  ;)


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