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Re: dict: keys() and values() order guaranteed to be same?

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From Stefan Behnel <stefan_ml@behnel.de>
Subject Re: dict: keys() and values() order guaranteed to be same?
Date Mon, 23 Jul 2012 13:43:14 +0200
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Henrik Faber, 23.07.2012 13:23:
> I have a question of which I'm unsure if the specification guarantees
> it. With an arbitrary dictionaty d, are d.keys() and d.values()
> guaraneed to be in the same order? I.e. what I mean is:
> 
> # For all dictionaries d:
> assert({ list(d.keys())[i]: list(d.values())[i] for i in range(len(d)) }
> == d)
> 
> I'm curious if it's allowed because in a special case it would make for
> a nice shortcut and clean code. I think however that the implementation
> may chose not to have them in the same order necessarily -- then I'd
> obviously avoid relying on it.

You should.

Stefan

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Thread

dict: keys() and values() order guaranteed to be same? Henrik Faber <hfaber@invalid.net> - 2012-07-23 13:23 +0200
  Re: dict: keys() and values() order guaranteed to be same? Philipp Hagemeister <phihag@phihag.de> - 2012-07-23 13:40 +0200
    Re: dict: keys() and values() order guaranteed to be same? Henrik Faber <hfaber@invalid.net> - 2012-07-23 14:19 +0200
  Re: dict: keys() and values() order guaranteed to be same? Stefan Behnel <stefan_ml@behnel.de> - 2012-07-23 13:43 +0200
  Re: dict: keys() and values() order guaranteed to be same? Stefan Behnel <stefan_ml@behnel.de> - 2012-07-23 13:58 +0200
    Re: dict: keys() and values() order guaranteed to be same? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-23 15:20 +0000
      Re: dict: keys() and values() order guaranteed to be same? Chris Angelico <rosuav@gmail.com> - 2012-07-24 02:18 +1000
      Re: dict: keys() and values() order guaranteed to be same? Ethan Furman <ethan@stoneleaf.us> - 2012-07-26 14:06 -0700
      Re: dict: keys() and values() order guaranteed to be same? Ethan Furman <ethan@stoneleaf.us> - 2012-07-26 14:03 -0700

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