self-aware list of objects able to sense constituent member alterations?

[Paul McGuire]

On Jan 27, 3:16 pm, Reckoner <recko... at gmail.com> wrote:
> The trick is that I would like A to be mysteriously aware that
> something about the  object 'a' has changed so that when I revisit A,
> I will know that the other items in the list need to be refreshed to
> reflect the changes in A as a result of changing 'a'.
>

Check out the Enthought Traits package.

-- Paul