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Re: percent faster than format()? (was: Re: optomizations)

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From Chris “Kwpolska” Warrick <kwpolska@gmail.com>
Date Tue, 23 Apr 2013 10:26:38 +0200
Subject Re: percent faster than format()? (was: Re: optomizations)
To Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com>
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On Tue, Apr 23, 2013 at 9:46 AM, Ulrich Eckhardt
<ulrich.eckhardt@dominolaser.com> wrote:
> Am 23.04.2013 06:00, schrieb Steven D'Aprano:
>>
>> If it comes down to micro-optimizations to shave a few microseconds off,
>> consider using string % formatting rather than the format method.
>
>
> Why? I don't see any obvious difference between the two...
>
>
> Greetings!
>
> Uli
>
> --
> http://mail.python.org/mailman/listinfo/python-list

$ python -m timeit "a = '{0} {1} {2}'.format(1, 2, 42)"
1000000 loops, best of 3: 0.824 usec per loop
$ python -m timeit "a = '%s %s %s' % (1, 2, 42)"
10000000 loops, best of 3: 0.0286 usec per loop

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Thread

optomizations Rodrick Brown <rodrick.brown@gmail.com> - 2013-04-22 21:19 -0400
  Re: optomizations Roy Smith <roy@panix.com> - 2013-04-22 21:53 -0400
    Re: optomizations Dan Stromberg <drsalists@gmail.com> - 2013-04-22 20:15 -0700
    Re: optomizations Rodrick Brown <rodrick.brown@gmail.com> - 2013-04-23 00:20 -0400
      Re: optomizations Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-04-23 04:38 +0000
    Re: optomizations Chris Angelico <rosuav@gmail.com> - 2013-04-23 12:03 +1000
  Re: optomizations Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-04-23 04:00 +0000
    Re: optomizations Chris Angelico <rosuav@gmail.com> - 2013-04-23 14:08 +1000
    percent faster than format()? (was: Re: optomizations) Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2013-04-23 09:46 +0200
      Re: percent faster than format()? (was: Re: optomizations) Chris “Kwpolska” Warrick <kwpolska@gmail.com> - 2013-04-23 10:26 +0200
        Re: percent faster than format()? Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2013-04-23 16:57 +0200
          Re: percent faster than format()? Lele Gaifax <lele@metapensiero.it> - 2013-04-23 17:44 +0200
      Re: percent faster than format()? (was: Re: optomizations) Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-04-23 14:36 +0000
        Re: percent faster than format()? (was: Re: optomizations) Chris Angelico <rosuav@gmail.com> - 2013-04-24 00:52 +1000

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