a single class supporting multiple facets/interfaces

[David Garamond]

Jp Calderone wrote:
>   I'm wondering if you want to do this for some kind of versioning scheme,
> where objects might be upgraded over time (and so present different
> implementations or interfaces)?  If so, another part of Twisted might be
> useful, twisted.python.styles.Versioned.

you hit the nail on the head :-) i'll look into 
twisted.python.styles.Versioned. thanks!

-- 
dave