[saurik]

I agree with Lisp (and it has even been done by key Erlang people), I am willing to believe SmallTalk (though it would be tempting to put the process boundary around every instance), but Python? Have you watched the early talks about why Erlang is designed the way that it is? Python is way way too imperitive in nature, having a syntax that makes functional subsets extremely limited and awkward.

[Jtsummers]

In my limited experience I feel my intuition is correct that you could make something that looks and mostly acts like erlang's concurrency stuffs in python. But it's not my main language by a long shot so I could well be wrong.