[merlincorey]

Considering they are learning python, and the prompt says to generate the value of Pi, this is a great chance to introduce generators[1], the yield statement, and the itertools[2] module to someone.

Of course, in my version, I'd generate the value of Tau.

[1] http://stackoverflow.com/questions/102535/what-can-you-use-p...

[2] http://docs.python.org/library/itertools.html