[kevsamuel]

Hi guys, I'm the autor of the answers.

Thanks for the feedback. Because of comments like these, I decided to spend more time at training people for a living, and I'm loving it.

So don't underestimate the power of web comments, it can literally change the way people live.

[emmelaich]

Great stuff. I do like to see the simplest possible exposition of any idea/technique though; here's my attempt at a simplest possible.

    def y():
        yield 1
	yield 2

    for i in y():
        print i

[kevsamuel]

You got it.