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Groups > comp.lang.python > #82266
| References | <mailman.16794.1418188833.18130.python-list@python.org> <5487ebc7$0$2817$c3e8da3$76491128@news.astraweb.com> |
|---|---|
| Date | 2014-12-10 17:53 +1100 |
| Subject | Re: Nested loops is strangely slow, totally at a loss. |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.16798.1418194395.18130.python-list@python.org> (permalink) |
On Wed, Dec 10, 2014 at 5:44 PM, Steven D'Aprano <steve@pearwood.info> wrote: > It would be nice if product iterators behaved like xrange() objects and > could perform "in" tests without exhausting the iterator, but they don't. > That's sad. It'd be very difficult to do that in the general sense. But it should be possible to have a multi-dimensional range object that behaves the way Py3's range object does, including membership tests and stuff. (Might already exist, for all I know.) That would do what the OP wants, I think. ChrisA
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Nested loops is strangely slow, totally at a loss. Shiyao Ma <i@introo.me> - 2014-12-10 13:20 +0800
Re: Nested loops is strangely slow, totally at a loss. Steven D'Aprano <steve@pearwood.info> - 2014-12-10 06:44 +0000
Re: Nested loops is strangely slow, totally at a loss. Chris Angelico <rosuav@gmail.com> - 2014-12-10 17:53 +1100
Re: Nested loops is strangely slow, totally at a loss. Steven D'Aprano <steve@pearwood.info> - 2014-12-10 07:21 +0000
Re: Nested loops is strangely slow, totally at a loss. Terry Reedy <tjreedy@udel.edu> - 2014-12-10 02:16 -0500
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