PYTHON setup.py build_ext --inplace
PYTHON -c "import a"
######## setup.py ########
from distutils.core import setup
from distutils.extension import Extension
from Cython.Distutils import build_ext
setup(
cmdclass = {'build_ext': build_ext},
ext_modules = [Extension("a", ["a.pyx"])],
)
######## a.pyx ########