I was one of the commenters who said you should put the idea here. I end up using generators in a pipe-like fashion quite a bit, so a pipe [iter, func]tool would be useful. I also liked the head function listed on the page, because when using the interactive interpreter I often want to see just a part of a larger output without having to go to all the trouble of whipping up something using islice or izip + irange. I think we could also use a tail function, and although obviously it wouldn't work with itertools.count it is useful when you're filtering a large file, and you just want to see the last part of the output to tell if your filters are basically doing the right thing.
Of course, all of these functions are somewhat trivial, but it could save a little work for a lot of people if they were in the stdlib. Also, they could be made to work like the proposed "yield from" and pass through .send and .raise commands, etc., which actually is a fair amount of work to implement.
-- Carl Johnson