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Re: [Python 2.7.3] What's the difference between these two uses of "for"?

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Date Sun, 17 Mar 2013 18:18:12 -0700
From Gary Herron <gary.herron@islandtraining.com>
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On 03/17/2013 05:58 PM, Yves S. Garret wrote:
> N00b question.  But here is the code:
>
> http://bin.cakephp.org/view/709201806
>
> In the first example, the first for-loop is run and then the list is assigned to the tricky variable.  But, what
> happens in the second example?  Does the loop after "in" get run only once or multiple number of times?

Just once.  The sorted fn is called just once, and the resulting list is 
iterated through.  In your first case, the list is bound to (assigned 
to) a name so it is accessible afterwards.  In the second case, it is 
available for garbage collection immediately after the loop finishes.

Gary Herron

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[Python 2.7.3] What's the difference between these two uses of "for"? "Yves S. Garret" <yoursurrogategod@gmail.com> - 2013-03-17 17:58 -0700
  Re: [Python 2.7.3] What's the difference between these two uses of "for"? Andrew Berg <bahamutzero8825@gmail.com> - 2013-03-17 20:24 -0500
  Re: [Python 2.7.3] What's the difference between these two uses of "for"? Gary Herron <gary.herron@islandtraining.com> - 2013-03-17 18:18 -0700
    Re: [Python 2.7.3] What's the difference between these two uses of "for"? "Yves S. Garret" <yoursurrogategod@gmail.com> - 2013-03-17 18:59 -0700
    Re: [Python 2.7.3] What's the difference between these two uses of "for"? "Yves S. Garret" <yoursurrogategod@gmail.com> - 2013-03-17 18:59 -0700
      Re: [Python 2.7.3] What's the difference between these two uses of "for"? "Yves S. Garret" <yoursurrogategod@gmail.com> - 2013-03-17 19:14 -0700
        Re: [Python 2.7.3] What's the difference between these two uses of "for"? Dave Angel <davea@davea.name> - 2013-03-18 07:38 -0400
      Re: [Python 2.7.3] What's the difference between these two uses of "for"? "Yves S. Garret" <yoursurrogategod@gmail.com> - 2013-03-17 19:14 -0700
        Re: [Python 2.7.3] What's the difference between these two uses of "for"? Roy Smith <roy@panix.com> - 2013-03-17 22:33 -0400
          Re: What's the difference between these two uses of "for"? alex23 <wuwei23@gmail.com> - 2013-03-18 18:08 -0700
        Re: [Python 2.7.3] What's the difference between these two uses of "for"? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-03-18 02:44 +0000
          Re: [Python 2.7.3] What's the difference between these two uses of "for"? Roy Smith <roy@panix.com> - 2013-03-17 22:51 -0400
  Re: [Python 2.7.3] What's the difference between these two uses of "for"? Roy Smith <roy@panix.com> - 2013-03-17 21:28 -0400
    Re: [Python 2.7.3] What's the difference between these two uses of "for"? "Yves S. Garret" <yoursurrogategod@gmail.com> - 2013-03-17 19:01 -0700
      Re: [Python 2.7.3] What's the difference between these two uses of "for"? Roy Smith <roy@panix.com> - 2013-03-17 22:28 -0400
  Re: [Python 2.7.3] What's the difference between these two uses of "for"? Terry Reedy <tjreedy@udel.edu> - 2013-03-18 00:37 -0400

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