[Python-Dev] PEP czar for PEP 3144?

Tue Mar 20 01:43:10 CET 2012

On Tue, Mar 20, 2012 at 8:34 AM, Guido van Rossum <guido at python.org> wrote:
> Anyway, I also tried to imply that it matters if the number of list
> items would ever be huge. It seems that is indeed possible (even if
> not likely) so I think iterators are useful.

But according to Nick's post, there's some sort of uniquification that
is done, and the algorithm currently used computes the whole list anyway.
I suppose that one could do the uniquification lazily, or find some other
way to avoid that computation. Is it worth it to optimize an unlikely case?