Motivation Cython is a superset of python that adds support for blazing fast c/c++ functions. Runcython aims to simplify the process of using Cython. To try out cython on any python program, main.py, just do: $ mv main.py main.pyx && runcython main.pyx In the standard cython build process, running myprogram.py(x) with cython requires creating myprogram.c, setup.py, myprogram.so, and finally_use.py