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From: Lie Ryan <lie.1296@gmail.com>
Subject: Re: AttributeError in "with" statement (3.2.2)
Date: Thu, 15 Dec 2011 06:14:19 +1100
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On 12/15/2011 03:56 AM, Eric Snow wrote:
> On Tue, Dec 13, 2011 at 11:05 PM, Eric Snow<ericsnowcurrently@gmail.com>  wrote:
>
> If you want to be more dynamic about it you can do it, but it involves
> black magic.  Chances are really good that being explicit through your
> class definition is the right approach.

Note that the black spice is to use the __class__ attribute:

foo.__class__.__exit__ = foo.goodbye