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Sat Jun 7 16:29:55 CEST 2014 · https://mail.python.org/pipermail/python-dev/2014-June/134950.html

On Fri, Jun 06, 2014 at 07:50:57PM +0100, Chris Withers wrote:
> Hi All,
> 
> I've been trying to add support for explicit comparison of namedtuples 
> into testfixtures and hit a problem which lead me to read the source and 
> be sad.
> 
> Rather than the mixin and class assembly in the function I expected to 
> find, I'm greeted by an exec of a string.
> 
> Curious as to what lead to that implementation approach? What does it 
> buy that couldn't have been obtained by a mixin providing the functionality?

namedtuple started off as a recipe on ActiveState by Raymond Hettinger. 
Start here:

http://code.activestate.com/recipes/500261-named-tuples/?in=user-178123

-- 
Steven

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[Python-Dev] namedtuple implementation grumble