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Groups > comp.lang.python > #16266
| Date | 2011-11-26 23:38 +0100 |
|---|---|
| From | Alexander Kapps <alex.kapps@web.de> |
| Subject | Re: Pragmatics of the standard is() function |
| References | <4ed15825$0$21841$426a34cc@news.free.fr> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3061.1322347054.27778.python-list@python.org> (permalink) |
On 26.11.2011 22:20, candide wrote: You already got answers for the "is" vs. "==" difference. I'd like to add the following. > In which cases should we use the is() function ? "is" is not a function, It's an operator, just like == or +. > is() function makes comparaison of (abstract representation of) > adresses of objects in memory. That's an implementation detail. CPython (and maybe others) implement "is" in terms of memory addresses. Other implementations might use an object ID number or whatever else.
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Pragmatics of the standard is() function candide <candide@free.invalid> - 2011-11-26 22:20 +0100
Re: Pragmatics of the standard is() function Roy Smith <roy@panix.com> - 2011-11-26 16:32 -0500
Re: Pragmatics of the standard is() function Chris Angelico <rosuav@gmail.com> - 2011-11-27 09:22 +1100
Re: Pragmatics of the standard is() function Alexander Kapps <alex.kapps@web.de> - 2011-11-26 23:38 +0100
Re: Pragmatics of the standard is() function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-26 23:01 +0000
Re: Pragmatics of the is operator candide <candide@free.invalid> - 2011-11-27 02:42 +0100
Re: Pragmatics of the is operator Chris Angelico <rosuav@gmail.com> - 2011-11-27 12:50 +1100
Re: Pragmatics of the is operator Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-27 03:13 +0000
Re: Pragmatics of the standard is() function Den <patentsvnc@gmail.com> - 2011-11-28 11:22 -0800
Re: Pragmatics of the standard is() function Ethan Furman <ethan@stoneleaf.us> - 2011-11-28 12:05 -0800
Re: Pragmatics of the standard is() function alex23 <wuwei23@gmail.com> - 2011-11-28 19:58 -0800
Re: Pragmatics of the standard is() function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-29 08:41 +0000
Re: Pragmatics of the standard is() function Den <patentsvnc@gmail.com> - 2011-11-29 09:11 -0800
Re: Pragmatics of the standard is() function Jean-Michel Pichavant <jeanmichel@sequans.com> - 2011-11-28 13:57 +0100
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