Awesome, thanks.  Going to see if I can use this for my crypto class (the project is to build an encryption system on top of Twitter, using GreaseMonkey).<p>Also - reminds me of CoffeeScript (which has similarly clean (if less Pythonic) syntax, but has to be compiled to Javascript, I believe).  <a href="http://jashkenas.github.com/coffee-script/#overview" rel="nofollow">http://jashkenas.github.com/coffee-script/#overview</a>