method to intercept string formatting % operations

[Brad Allen]

On Fri, Feb 5, 2010 at 9:49 AM, Jean-Michel Pichavant
<jeanmichel at sequans.com> wrote:

> Anyway why would you want to use the tuple form ? it's beaten in every
> aspect by the dictionary form.

I'm subclassing a namedtuple, and adding some additional functionality
such as __getitem__, __setitem__, so that the namedtuple also behaves
like a dict.