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From: Lie Ryan <lie.1296@gmail.com>
Subject: Re: replacing __dict__ with an OrderedDict
Date: Mon, 09 Jan 2012 23:10:14 +1100
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On 01/09/2012 09:03 AM, Eelco wrote:
> i havnt read every post in great detail, but it doesnt seem like your
> actual question has been answered, so ill give it a try.
>
> AFAIK, changing __dict__ to be an ordereddict is fundamentally
> impossible in python 2. __dict__ is a builtin language construct
> hardcoded into the C API. There is no way to mess with it.
>
> Apparently this is different in python 3, but I dont know much about
> that.

Actually the primary question has been answered by Ian Kelly which 
suggested __prepare__ for Python 3, and Peter Otten posted a code for a 
custom TestLoader that will essentially do what the OP wanted.

I was just suggesting that what the OP thinks he wants is quite likely 
not what he actually wants.