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From: Pete Forman <petef4+usenet@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: LBYL vs EAFP
Date: Tue, 05 Feb 2013 09:49:06 +0000
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Steven D'Aprano <steve+comp.lang.python@pearwood.info> writes:
>> I want to check that a value is a number. [...]
> I'm leaning towards an isinstance check

Well that is the answer to your question, whether the value *is* a
number. EAFP can answer the question whether the value *behaves* like a
number, where the criterion depends on what your code is aiming to do
with the value.

BTW what if the value is Not-a-Number? ;-)

-- 
Pete Forman