Thanks for the link. I was just poking around the Cython site myself, and it looks like they've come a long way since I last looked into it. It seems that they're getting much closer to full compatibility.

It makes me wonder if we're closing in on the day when Cython gets rolled into Python proper, and you can just "import static-types" to activate optional typing, then add some static typing to your code, and you would get Java performance from your Python code.