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Groups > comp.lang.python > #86159

Re: id() and is operator

References <87f18c68-120d-44f2-bd34-6f73c69365da@googlegroups.com> <871tlhiqpz.fsf@elektro.pacujo.net>
Date 2015-02-23 08:36 +1100
Subject Re: id() and is operator
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.19030.1424640985.18130.python-list@python.org> (permalink)

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On Mon, Feb 23, 2015 at 8:25 AM, Marko Rauhamaa <marko@pacujo.net> wrote:
> This is a true statement:
>
>    If X is Y, then id(X) == id(Y).
>
> However, this is generally not a true statement:
>
>    If X is Y, then id(X) is id(Y).

Irrelevant, because the identities of equal integers didn't come into this.

ChrisA

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Thread

id() and is operator LJ <luisjosenovoa@gmail.com> - 2015-02-22 09:53 -0800
  Re: id() and is operator Laura Creighton <lac@openend.se> - 2015-02-22 19:13 +0100
  Re: id() and is operator Chris Angelico <rosuav@gmail.com> - 2015-02-23 06:23 +1100
  Re: id() and is operator Gary Herron <gherron@digipen.edu> - 2015-02-22 11:16 -0800
  Re: id() and is operator Laura Creighton <lac@openend.se> - 2015-02-22 20:58 +0100
  Re: id() and is operator Marko Rauhamaa <marko@pacujo.net> - 2015-02-22 23:25 +0200
    Re: id() and is operator Chris Angelico <rosuav@gmail.com> - 2015-02-23 08:36 +1100
    Re: id() and is operator Terry Reedy <tjreedy@udel.edu> - 2015-02-23 01:02 -0500
      Re: id() and is operator Marko Rauhamaa <marko@pacujo.net> - 2015-02-23 08:31 +0200
    Re: id() and is operator Gary Herron <gherron@digipen.edu> - 2015-02-22 22:29 -0800
  Re: id() and is operator Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-02-23 12:31 +1100
  Re: id() and is operator Terry Reedy <tjreedy@udel.edu> - 2015-02-23 01:14 -0500

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