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Groups > comp.lang.python > #104672

Re: Descriptors vs Property

From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Subject Re: Descriptors vs Property
Date 2016-03-12 17:05 +1100
Message-ID <mailman.25.1457762756.12893.python-list@python.org> (permalink)
References <nc0b1u$ckq$1@dont-email.me>

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On Sat, Mar 12, 2016 at 4:59 PM, Veek. M <vek.m1234@gmail.com> wrote:
> A property uses the @property decorator and has @foo.setter
> @foo.deleter.
>
> A descriptor follows the descriptor protocol and implements the __get__
> __set__ __delete__ methods.
>
> But they both do essentially the same thing, allow us to do:
> foo = 10
> del foo
> x = foo
>
> So why do we have two ways of doing this?

The descriptor protocol is what powers the @property decorator. It's
like asking why we have both lists and sequences; the sequence
protocol is how you interact with lists.

ChrisA

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Thread

Descriptors vs Property "Veek. M" <vek.m1234@gmail.com> - 2016-03-12 11:29 +0530
  Re: Descriptors vs Property Chris Angelico <rosuav@gmail.com> - 2016-03-12 17:05 +1100
  Re: Descriptors vs Property Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-11 23:12 -0700
    Re: Descriptors vs Property "Veek. M" <vek.m1234@gmail.com> - 2016-03-12 11:54 +0530
      Re: Descriptors vs Property Chris Angelico <rosuav@gmail.com> - 2016-03-12 17:35 +1100
      Re: Descriptors vs Property Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-11 23:37 -0700
  Re: Descriptors vs Property "Veek. M" <vek.m1234@gmail.com> - 2016-03-12 11:50 +0530
    Re: Descriptors vs Property Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-12 18:13 +0100
      Re: Descriptors vs Property "Veek. M" <vek.m1234@gmail.com> - 2016-03-13 12:48 +0530
        Re: Descriptors vs Property Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-13 10:25 +0100
          Re: Descriptors vs Property "Veek. M" <vek.m1234@gmail.com> - 2016-03-13 15:26 +0530
            Re: Descriptors vs Property Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-13 11:35 +0100
              Re: Descriptors vs Property "Veek. M" <vek.m1234@gmail.com> - 2016-03-13 18:50 +0530
                Re: Descriptors vs Property Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-13 19:15 +0100
                Re: Descriptors vs Property Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-14 15:34 +0000
                Re: Descriptors vs Property Rustom Mody <rustompmody@gmail.com> - 2016-03-14 10:16 -0700
                Re: Descriptors vs Property Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-16 01:53 +0100
  Re: Descriptors vs Property Ethan Furman <ethan@stoneleaf.us> - 2016-03-16 08:15 -0700

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