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From: Robert Kern <robert.kern@gmail.com>
Subject: Re: Encoding NaN in JSON
Date: Fri, 19 Apr 2013 11:43:26 +0530
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On 2013-04-19 10:34, Tim Roberts wrote:
> Miki Tebeka <miki.tebeka@gmail.com> wrote:
>>
>>>> I'm trying to find a way to have json emit float('NaN') as 'N/A'.
>>> No.  There is no way to represent NaN in JSON.  It's simply not part of the
>>> specification.
>>
>> I know that. I'm trying to emit the *string* 'N/A' for every NaN.
>
> You understand that this will result in a chunk of text that is not JSON?
> Other JSON readers won't be able to read it.

I think he means something like this:

 >>> json.dumps([float('nan')])
'["N/A"]'

Not

'[N/A]'

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco