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Date: Thu, 18 Apr 2013 00:40:30 +0200
From: Roland Koebler <r.koebler@yahoo.de>
To: python-list@python.org
Subject: Re: Encoding NaN in JSON
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Xref: csiph.com comp.lang.python:43785

Hi,

> > Easiest way is probably to transform your object before you try to write
> Yeah, that's what I ended up doing. Wondered if there's a better way ...
yes, there is: subclass+extend the JSON-encoder, see pydoc json.

e.g.:
class JsonNanEncoder(json.JSONEncoder):
    def default(self, obj):
	if some-check-if-obj-is-NaN:
	    return 'NaN'
	return json.JSONEncoder.default(self, obj)

Roland