"specialdict" module

[Michele Simionato]

Michael Spencer:
> Alternatively, you could provide factory functions to construct the
defaultdict.
>  Someone (Michele?) recently posted an implementation of this

Yes, here is the link for the ones who missed that thread:

http://groups-beta.google.com/group/comp.lang.python/browse_frm/thread/a0bae9b887a4de41/7567d30b796423c7?q=simionato+defaultdict&rnum=1#7567d30b796423c7