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From: Peter Otten <__peter__@web.de>
Subject: Re: A little morning puzzle
Date: Wed, 19 Sep 2012 13:33:04 +0200
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Xref: csiph.com comp.lang.python:29480

Neal Becker wrote:

> I have a list of dictionaries.  They all have the same keys.  I want to
> find the set of keys where all the dictionaries have the same values.  
Suggestions?

>>> items = [
... {1:2, 2:2},
... {1:1, 2:2},
... ]
>>> first = items[0].items()
>>> [key for key, value in first if all(item[key] == value for item in 
items)]
[2]