python ext example

README.md

python ext example

• sudo apt-get update
• sudo apt-get install python-dev -y
• python setup.py install
• python foo_test.py

foo.c

#include <Python.h>

static PyObject *foo_add(PyObject *self, PyObject *args)
{
    int a;
    int b;

    if (!PyArg_ParseTuple(args, "ii", &a, &b))
    {
        return NULL;
    }

    return Py_BuildValue("i", a + b);
}

static PyMethodDef foo_methods[] = {
        { "add", (PyCFunction)foo_add, METH_VARARGS, NULL },
        { NULL, NULL, 0, NULL }
};

PyMODINIT_FUNC initfoo()
{
        Py_InitModule3("foo", foo_methods, "My first extension module.");
}

foo_test.py

import foo

print foo.add(1, 1)

setup.py

from distutils.core import setup, Extension

module1 = Extension('foo', sources=['foo.c'])

setup(name='foo',
      version='1.0',
      description='This is a demo package',
      ext_modules=[module1])