Cython is just a nice way of writing Python C extensions without the boilerplate, which hooks into setuptools and has a more pythonic syntax than C/C++. They a

Cython is just a nice way of writing Python C extensions without the boilerplate, which hooks into setuptools and has a more pythonic syntax than C/C++. They are not so much alternatives, rather complimentary things. I guess this release allows Cython compiled modules to work directly with PyPy, which is nice.