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Re: Continuing indentation

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From Ethan Furman <ethan@stoneleaf.us>
Newsgroups comp.lang.python
Subject Re: Continuing indentation
Date Fri, 04 Mar 2016 09:36:09 -0800
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On 03/04/2016 07:25 AM, Ian Kelly wrote:
> On Fri, Mar 4, 2016 at 7:03 AM, alister <alister.ware@ntlworld.com> wrote:
>> On Fri, 04 Mar 2016 10:12:58 +0000, cl wrote:
>>
>>> Steven D'Aprano <steve@pearwood.info> wrote:
>>>> On Fri, 4 Mar 2016 12:23 pm, INADA Naoki wrote:
>>>>
>>>>
>>>>>>
>>>>>> Indeed. I don't understand why, when splitting a condition such as
>>>>>> this,
>>>>>> people tend to put the operator at the end of each line.
>>>>>>
>>>>>>
>>>>> Because PEP8 says:
>>>>>
>>>>>> The preferred place to break around a binary operator is after the
>>>>> operator, not before it. http://pep8.org/#maximum-line-length
>>>>
>>>> PEP 8 is wrong :-)
>>>>
>>> Yes, I agree.  In my mind the logic is:-
>>>
>>>      IF xxx
>>>          AND yyy AND zzz OR aaa
>>>      THEN do something
>>>
>>> The PEP8 correct(er):-
>>>
>>>      IF xxx AND
>>>           yyy AND zzz OR aaa
>>>      THEN do something
>>>
>>> ... just seems all wrong and difficult to understand.
>>
>> not at all
>> the split after the operator shows that their is more to that line
>> splitting before & the reader could believe that the condition ends there
>>
>> PEP 8 is mos definitely correct on this one
>
> I disagree. When I'm skimming over code, I find it unlikely that I'll
> read the last token of the line. That's where trivialities like
> arguments to function calls are found. It's much more likely that I'll
> read the first token of the next line.

And, as any pythonista knows: The conditions aren't over until the 
indentation changes.  ;)

--
~Ethan~

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Thread

Continuing indentation Skip Montanaro <skip.montanaro@gmail.com> - 2016-03-02 14:43 -0600
  Re: Continuing indentation Marko Rauhamaa <marko@pacujo.net> - 2016-03-02 22:50 +0200
    Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-02 14:01 -0800
      Re: Continuing indentation Marko Rauhamaa <marko@pacujo.net> - 2016-03-03 00:10 +0200
        Re: Continuing indentation Skip Montanaro <skip.montanaro@gmail.com> - 2016-03-02 16:44 -0600
        Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-02 14:51 -0800
        Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-02 14:56 -0800
        Re: Continuing indentation Chris Angelico <rosuav@gmail.com> - 2016-03-03 10:46 +1100
        Re: Continuing indentation Steven D'Aprano <steve@pearwood.info> - 2016-03-03 13:15 +1100
        Re: Continuing indentation John Gordon <gordon@panix.com> - 2016-03-03 16:16 +0000
          Re: Continuing indentation Marko Rauhamaa <marko@pacujo.net> - 2016-03-03 18:47 +0200
            Re: Continuing indentation Rob Gaddi <rgaddi@highlandtechnology.invalid> - 2016-03-03 18:06 +0000
              Re: Continuing indentation Marko Rauhamaa <marko@pacujo.net> - 2016-03-03 21:36 +0200
            Re: Continuing indentation Steven D'Aprano <steve@pearwood.info> - 2016-03-04 11:13 +1100
              Re: Continuing indentation INADA Naoki <songofacandy@gmail.com> - 2016-03-04 09:45 +0900
              Re: Continuing indentation Erik <python@lucidity.plus.com> - 2016-03-04 01:06 +0000
              Re: Continuing indentation INADA Naoki <songofacandy@gmail.com> - 2016-03-04 10:23 +0900
                Re: Continuing indentation Steven D'Aprano <steve@pearwood.info> - 2016-03-04 14:48 +1100
                Re: Continuing indentation cl@isbd.net - 2016-03-04 10:12 +0000
                Re: Continuing indentation alister <alister.ware@ntlworld.com> - 2016-03-04 14:03 +0000
                Re: Continuing indentation Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-04 08:25 -0700
                Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-04 09:36 -0800
                Re: Continuing indentation sohcahtoa82@gmail.com - 2016-03-04 13:14 -0800
                Re: Continuing indentation Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-04 21:20 +0000
                Re: Continuing indentation Erik <python@lucidity.plus.com> - 2016-03-04 23:31 +0000
                Re: Continuing indentation Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-04 23:45 +0000
                Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-04 15:53 -0800
                Re: Continuing indentation Simon Ward <simon+python@bleah.co.uk> - 2016-03-05 00:23 +0000
                Re: Continuing indentation sohcahtoa82@gmail.com - 2016-03-04 17:17 -0800
                Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-04 18:14 -0800
                Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-05 13:22 +1100
                Re: Continuing indentation Tim Chase <python.list@tim.thechases.com> - 2016-03-04 20:49 -0600
                Re: Continuing indentation srinivas devaki <mr.eightnoteight@gmail.com> - 2016-03-05 10:25 +0530
                Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-05 16:10 +1100
                Re: Continuing indentation Erik <python@lucidity.plus.com> - 2016-03-05 00:52 +0000
                Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-05 12:05 +1100
                Re: Continuing indentation Erik <python@lucidity.plus.com> - 2016-03-05 01:45 +0000
                Re: Continuing indentation Steven D'Aprano <steve@pearwood.info> - 2016-03-05 18:17 +1100
                Re: Continuing indentation alister <alister.ware@ntlworld.com> - 2016-03-04 13:59 +0000
                Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-05 10:41 +1100
                Re: Continuing indentation sohcahtoa82@gmail.com - 2016-03-04 16:06 -0800
                Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-05 11:30 +1100
                Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-04 17:01 -0800
              Re: Continuing indentation Erik <python@lucidity.plus.com> - 2016-03-04 02:24 +0000
              Re: Continuing indentation Marko Rauhamaa <marko@pacujo.net> - 2016-03-04 08:28 +0200
  Re: Continuing indentation codewizard@gmail.com - 2016-03-02 15:46 -0800
    Re: Continuing indentation Chris Angelico <rosuav@gmail.com> - 2016-03-03 10:54 +1100
      Re: Continuing indentation Pete Forman <petef4+usenet@gmail.com> - 2016-03-03 00:23 +0000
    Re: Continuing indentation Carl Meyer <carl@oddbird.net> - 2016-03-02 17:02 -0700
      Re: Continuing indentation Steven D'Aprano <steve@pearwood.info> - 2016-03-03 13:22 +1100
        Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-03 13:30 +1100
        Re: Continuing indentation Chris Angelico <rosuav@gmail.com> - 2016-03-03 13:33 +1100
        Re: Continuing indentation Ethan Furman <ethan@stoneleaf.us> - 2016-03-02 18:57 -0800
    Re: Continuing indentation Ben Finney <ben+python@benfinney.id.au> - 2016-03-03 11:30 +1100
    Re: Continuing indentation cl@isbd.net - 2016-03-03 10:22 +0000

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