Re: Optimizing list processing

From	Terry Reedy <tjreedy@udel.edu>
Subject	Re: Optimizing list processing
Date	2013-12-12 13:07 -0500
References	<52a8fb2d$0$29992$c3e8da3$5496439d@news.astraweb.com> <l8b6t2$7eu$1@ger.gmane.org> <l8c5h5$o3b$1@ger.gmane.org>
Newsgroups	comp.lang.python
Message-ID	<mailman.4006.1386871684.18130.python-list@python.org> (permalink)

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On 12/12/2013 6:09 AM, Stefan Behnel wrote:
> Terry Reedy, 12.12.2013 03:26:
>> from itertools import count
>> table = sorted(t for t in zip(iterable, count))
>
> This is a useless use of a generator expression. sorted(zip(...)) is enough
> (and likely to be substantially faster also).

Yes, definitely, and thank you. I did not squeeze enough.

-- 
Terry Jan Reedy

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Thread

Optimizing list processing Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-11 23:54 +0000
  Re: Optimizing list processing MRAB <python@mrabarnett.plus.com> - 2013-12-12 00:59 +0000
    Re: Optimizing list processing Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-12 01:43 +0000
      Re: Optimizing list processing MRAB <python@mrabarnett.plus.com> - 2013-12-12 02:09 +0000
  Re: Optimizing list processing duncan smith <buzzard@invalid.invalid> - 2013-12-12 01:02 +0000
  Re: Optimizing list processing Ben Finney <ben+python@benfinney.id.au> - 2013-12-12 12:18 +1100
  Re: Optimizing list processing Terry Reedy <tjreedy@udel.edu> - 2013-12-11 21:26 -0500
    Re: Optimizing list processing Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-12 12:08 +0000
      Re: Optimizing list processing Chris Angelico <rosuav@gmail.com> - 2013-12-12 23:25 +1100
      Re: Optimizing list processing MRAB <python@mrabarnett.plus.com> - 2013-12-12 13:32 +0000
      Re: Optimizing list processing Chris Angelico <rosuav@gmail.com> - 2013-12-13 01:06 +1100
      Re: Optimizing list processing Terry Reedy <tjreedy@udel.edu> - 2013-12-12 13:40 -0500
        Re: Optimizing list processing Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-13 00:14 +0000
          Re: Optimizing list processing Chris Angelico <rosuav@gmail.com> - 2013-12-13 12:01 +1100
  Re: Optimizing list processing Stefan Behnel <stefan_ml@behnel.de> - 2013-12-12 12:09 +0100
  Re: Optimizing list processing Peter Otten <__peter__@web.de> - 2013-12-12 16:08 +0100
    Re: Optimizing list processing Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-13 03:01 +0000
      Re: Optimizing list processing rusi <rustompmody@gmail.com> - 2013-12-12 21:35 -0800
  Re: Optimizing list processing Terry Reedy <tjreedy@udel.edu> - 2013-12-12 13:07 -0500

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