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From: Peter Otten <__peter__@web.de>
Subject: Re: suggestions, comments on an "is_subdict" test
Date: Fri, 22 Apr 2011 17:06:03 +0200
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Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:3880

Zero Piraeus wrote:

> :
> 
>>> I'd like to ask for comments or advice on a simple code for testing a
>>> "subdict", i.e. check whether all items of a given dictionary are
>>> present in a reference dictionary.
> 
> Anything wrong with this?
> 
> def is_subdict(test_dct, base_dct):
>     return test_dct <= base_dct and all(test_dct[k] == base_dct[k] for
> k in test_dct)

It may raise a KeyError.