I do follow Julia development and I am aware that it isn't quite there, but at least their community does embrace JIT compilation, not like Python that PyPy is just yet another project, ignored by the reference implementation.
> SciPy, which, you may not be aware, is basically C and Fortran code wrapped in Python API.
Which for me personally means, that I would rather C and Fortran directly or better yet, a C++, .NET or Java binding to them.