I've been playing with Julia a bit lately, but I haven't had any good reasons to write real code in it yet. I've got to say, a useful Python compatibility layer between the two languages would be awesome. Being able to call SciPy libraries from Julia would make it a lot more interesting to start writing Julia code.
Heh. That was the easy part. Being able to get a PyObject back from the embedded Python interpreter and manipulate it in useful ways is the real trick. But at least it's a start. And it was pleasantly easy, due to two things: how easy it is to call C functions from Julia, and the fact that Python has made it trivial to be called from C code.
(Imagine using a C++ library from any other language like this. Wait, you can't.)
