"Raymond Hettinger" <[EMAIL PROTECTED]> wrote:
> [Jeff Epler]
> > Maybe something for sets like 'appendlist' ('unionset'?)
>
> While this could work and potentially be useful, I think it is better to keep
> the proposal focused on the two common use cases. Adding a third would reduce
> the chance of acceptance.
>
> Also, in all of my code base, I've not run across a single opportunity to use
> something like unionset(). This is surprising because I'm the set() author
> and
> frequently use set based algorithms. Your example was a good one and I can
> also image a graph represented as a dictionary of sets. Still, I don't mind
> writing out the plain Python for this one if it only comes up once in a blue
> moon.
Good example. I actually have a directed graph and multigraph module that uses
dictionary of sets
internally. It turns out I've used setdefault 8 times in this module alone !
George
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