> [...] when one searches for a powerset function, the
> logical place to look isn't itertools, it's the set class. -- H

That's a rather object-oriented view, I think.

So you look for the permutation function in the list class?

I prefer these functions gathered in one place, and I find that itertools does the job.

I do however agree that there could be a powerset function there for convenience, but only +0.

- Pål GD