an interpreter for python which does not use the stack at all: http://www.stackless.com/
and here is the example I tried to outline which works with stackless: http://members.verizon.net/olsongt/stac ... coroutines
and here are some other intresting stuff for those bored by jikes

PyPy: like jikes: python in python: http://codespeak.net/pypy/dist/pypy/doc/
Unladen Swallow: a JIT for python: http://code.google.com/p/unladen-swallo ... rojectPlan
Edit:
the example above uses channels in stackless, so It does nor really work unchanged. But I think it should work with the interpreter presented in the lecture.