https://github.com/JohnMcLear/NXP-Raspberry-Pi-Card-Polling-Demo
#include </usr/include/python2.7/Python.h>
https://docs.python.org/2/extending/embedding.html
gcc -I/usr/include/python2.7 test.c -lpython2.7
PYTHONPATH=. ./call_function pyfunction multiply 2 3