is this data structure build-in or I'll have to write my own class?

[Larry Bates]

Jorge Vargas wrote:
> I need a data structure that will let me do:
> 
> - attribute access (or index)
> - maintain the order (for iter and print)
> - be mutable.
> 
> in case there isn't one. I was thinking having a base class like Bunch
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52308 and on
> top of that keeping a list of the keys and pop/push to the list when
> adding/deleting items. I don't like this idea because I'll have to
> keep each key twice. (in the list and in __dict__, is this the only
> way of doing it?

Sounds like a good time to learn ElementTree (included in Python 2.5 but 
available for earlier versions).

-Larry