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Groups > comp.lang.python > #30122

Re: data attributes override method attributes?

From Terry Reedy <tjreedy@udel.edu>
Subject Re: data attributes override method attributes?
Date 2012-09-25 15:58 -0400
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Newsgroups comp.lang.python
Message-ID <mailman.1369.1348603140.27098.python-list@python.org> (permalink)

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On 9/25/2012 11:03 AM, Chris Angelico wrote:
> On Wed, Sep 26, 2012 at 12:54 AM, Peter Otten <__peter__@web.de> wrote:
>> To me
>>
>> "Data attributes override method attributes with the same name"
>>
>> implies that data attributes take precedence over method attributes, not
>> that they replace them only when there is an assignment of data after the
>> method definition.
>>
>> I would even consider replacing the whole paragraph
>> with something like
>>
>> "Data attributes and method attributes share the same namespace. To avoid
>> name conflicts consider using verbs for methods and nouns for data
>> attributes"
>
> Instance attributes override (shadow) class attributes.

except for (some? all?) special methods

> Since methods
> tend to be on the class and data tends to be on the instance, the
> original sentence does make some sense.

but it *is* wrong


  The section is talking about
> conventions, so it's not inherently wrong,

The suggestion to Capitalize method names and prefix data names with '_' 
are wrong with respect to the style guide.

  but perhaps just needs a
> comment about methods not usually being attached to the instance.
>
> ChrisA
>


-- 
Terry Jan Reedy

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Thread

data attributes override method attributes? Jayden <jayden.shui@gmail.com> - 2012-09-25 06:41 -0700
  Re: data attributes override method attributes? alex23 <wuwei23@gmail.com> - 2012-09-25 06:52 -0700
  Re: data attributes override method attributes? Peter Otten <__peter__@web.de> - 2012-09-25 16:08 +0200
    Re: data attributes override method attributes? alex23 <wuwei23@gmail.com> - 2012-09-25 07:11 -0700
      Re: data attributes override method attributes? Peter Otten <__peter__@web.de> - 2012-09-25 16:54 +0200
      Re: data attributes override method attributes? Chris Angelico <rosuav@gmail.com> - 2012-09-26 01:03 +1000
      Re: data attributes override method attributes? Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-09-25 16:54 +0200
      Re: data attributes override method attributes? Terry Reedy <tjreedy@udel.edu> - 2012-09-25 15:58 -0400
      Re: data attributes override method attributes? Ian Kelly <ian.g.kelly@gmail.com> - 2012-09-25 14:07 -0600
      Re: data attributes override method attributes? Terry Reedy <tjreedy@udel.edu> - 2012-09-25 16:18 -0400
      Re: data attributes override method attributes? Terry Reedy <tjreedy@udel.edu> - 2012-09-25 16:34 -0400
      RE: data attributes override method attributes? "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2012-09-28 18:02 +0000
        Re: data attributes override method attributes? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-29 03:20 +0000
      Re: data attributes override method attributes? Ian Kelly <ian.g.kelly@gmail.com> - 2012-09-28 12:25 -0600
      Re: data attributes override method attributes? Terry Reedy <tjreedy@udel.edu> - 2012-09-28 14:26 -0400
    Re: data attributes override method attributes? Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2012-09-25 21:52 +0200
  Re: data attributes override method attributes? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-09-25 14:12 +0000

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