No documentation yet, but you can have a look at this node, which is
pretty simple:
svn co
https://code.ros.org/svn/wg-ros-pkg/branches/trunk_boxturtle/sandbox/image_rotate

On Wed, 2010-04-21 at 12:00 -0700, Patrick Bouffard wrote:
> Is anyone aware of an example of a dynamic_reconfigure server as part
> of a Python node? The documentation seems to only talk about how to
> set up a client, but code for the server does appear to be in
> boxturtle and I have some Python based nodes which I would like to be
> able to dynamically_reconfigure. :)
> 
> Thanks,
> Pat
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