"filtered view" upon lists?

[bearophileHUGS at lycos.com]

Wildemar Wildenburger:
> I sort of wanted to avoid these. Though my lists shouldn't terribly
> long, so performance is not an issue so much. I simply want to avoid
> having two datasets that I have to sync. Major pain, I believe.

Note that if you just have to scan the "view list", then you can use
the lazy:

itertool.ifilter(predicate, iterable)

Bye,
bearophile