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Re: pylint woes

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From MRAB <python@mrabarnett.plus.com>
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Subject Re: pylint woes
Date Sun, 8 May 2016 03:21:33 +0100
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On 2016-05-08 03:14, Stephen Hansen wrote:
> On Sat, May 7, 2016, at 06:16 PM, DFS wrote:
>
>> Why is it better to zip() them up and use:
>>
>> for item1, item2, item3 in zip(list1, list2, list3):
>>       do something with the items
>>
>> than
>>
>> for j in range(len(list1)):
>>     do something with list1[j], list2[j], list3[j], etc.
>
> Although Chris has a perfectly good and valid answer why conceptually
> the zip is better, let me put forth: the zip is simply clearer, more
> readable and more maintainable.
>
> This is a question of style and to a certain degree aesthetics, so is
> somewhat subjective, but range(len(list1)) and list1[j] are all
> indirection, when item1 is clearly (if given a better name then 'item1')
> something distinct you're working on.
>
+1

If you're iterating through multiple sequences in parallel, zip is the 
way to go.

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Thread

pylint woes DFS <nospam@dfs.com> - 2016-05-07 12:51 -0400
  Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 03:01 +1000
    Re: pylint woes DFS <nospam@dfs.com> - 2016-05-07 21:16 -0400
      Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 11:36 +1000
        Re: pylint woes DFS <nospam@dfs.com> - 2016-05-07 22:15 -0400
          Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 12:50 +1000
            Re: pylint woes DFS <nospam@dfs.com> - 2016-05-10 18:36 -0400
              Re: pylint woes MRAB <python@mrabarnett.plus.com> - 2016-05-11 02:02 +0100
      Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-07 19:14 -0700
        Re: pylint woes DFS <nospam@dfs.com> - 2016-05-07 23:04 -0400
          Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-07 20:46 -0700
            Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 10:26 -0400
          Re: pylint woes Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-05-08 08:50 +0300
            Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 10:25 -0400
              Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-09 00:36 +1000
                Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 11:06 -0400
                Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-08 08:15 -0700
                Re: pylint woes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2016-05-09 13:17 +1200
                Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-09 12:18 +1000
                Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 22:58 -0400
                Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-09 01:15 +1000
                Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 17:06 -0400
              Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-08 08:11 -0700
              Re: pylint woes Steven D'Aprano <steve@pearwood.info> - 2016-05-09 01:51 +1000
                Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 17:04 -0400
                Re: pylint woes Steven D'Aprano <steve@pearwood.info> - 2016-05-09 13:09 +1000
      Re: pylint woes MRAB <python@mrabarnett.plus.com> - 2016-05-08 03:21 +0100
      Re: pylint woes Steven D'Aprano <steve@pearwood.info> - 2016-05-08 21:36 +1000
        Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 17:24 -0400
          Re: pylint woes Joel Goldstick <joel.goldstick@gmail.com> - 2016-05-08 17:39 -0400
          Re: pylint woes Steven D'Aprano <steve@pearwood.info> - 2016-05-09 13:46 +1000
  Re: pylint woes Michael Selik <michael.selik@gmail.com> - 2016-05-07 18:42 +0000
  Re: pylint woes Peter Pearson <pkpearson@nowhere.invalid> - 2016-05-07 18:43 +0000
    Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 17:05 -0400
  Re: pylint woes Christopher Reimer <christopher_reimer@icloud.com> - 2016-05-07 11:52 -0700
    Re: pylint woes DFS <nospam@dfs.com> - 2016-05-07 23:38 -0400
      Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 13:56 +1000
      Re: pylint woes Peter Otten <__peter__@web.de> - 2016-05-08 16:19 +0200
  Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-07 12:21 -0700
  Re: pylint woes Stephen Hansen <me@ixokai.io> - 2016-05-07 12:23 -0700
  Re: pylint woes Terry Reedy <tjreedy@udel.edu> - 2016-05-07 15:40 -0400
    Re: pylint woes DFS <nospam@dfs.com> - 2016-05-07 23:28 -0400
      Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 13:51 +1000
        Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 00:40 -0400
          Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 14:55 +1000
      Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-07 20:55 -0700
      Re: pylint woes Ian Kelly <ian.g.kelly@gmail.com> - 2016-05-07 23:09 -0600
      Re: pylint woes Peter Otten <__peter__@web.de> - 2016-05-08 16:12 +0200
  Re: pylint woes Christopher Reimer <christopher_reimer@icloud.com> - 2016-05-07 12:43 -0700
  Re: pylint woes Ray Cote <rgacote@appropriatesolutions.com> - 2016-05-07 15:52 -0400
  Re: pylint woes Christopher Reimer <christopher_reimer@icloud.com> - 2016-05-07 13:20 -0700
  Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 07:56 +1000
  Re: pylint woes Terry Reedy <tjreedy@udel.edu> - 2016-05-07 21:44 -0400
  Re: pylint woes Steven D'Aprano <steve@pearwood.info> - 2016-05-08 13:25 +1000
    Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 00:10 -0400
      Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 14:21 +1000
      Re: pylint woes "D'Arcy J.M. Cain" <darcy@VybeNetworks.com> - 2016-05-08 08:50 -0400
      Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-08 23:01 +1000
        Re: pylint woes Larry Hudson <orgnut@yahoo.com> - 2016-05-08 13:45 -0700
          Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-09 08:07 +1000
            Re: pylint woes Larry Hudson <orgnut@yahoo.com> - 2016-05-08 18:28 -0700
        Re: pylint woes Dan Sommers <dan@tombstonezero.net> - 2016-05-08 20:49 +0000
          Re: pylint woes Chris Angelico <rosuav@gmail.com> - 2016-05-09 08:10 +1000
      Re: pylint woes Steven D'Aprano <steve@pearwood.info> - 2016-05-09 03:25 +1000
        Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 17:16 -0400
          Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-08 14:38 -0700
            Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 17:46 -0400
              Re: pylint woes Stephen Hansen <me+python@ixokai.io> - 2016-05-08 15:05 -0700
                Re: pylint woes DFS <nospam@dfs.com> - 2016-05-08 18:24 -0400

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