While this is gorgeous, I can't help but feel it's a bit disingenuous to call anything "Pythonic" and "functional" at the same time given Guido's take on the whole thing[0][1]... especially when you're actually extending the language to make it happen. ;)
[0]: http://python-history.blogspot.com/2009/04/origins-of-python...
[1]: http://xahlee.info/perl-python/python_3000.html