Cpp guidelines

Hello world example:

#include <Python.h>
#include <string>
#include <iostream>

std::string say_hello(char *what) {

    auto func = [](char *arg) -> std::string {
        return std::string("hello ") + std::string(arg) + std::string(" !");
    };
    return func(what);
}

static PyObject *hello(PyObject *self, PyObject *args)
{
  char *input;

  if (!PyArg_ParseTuple(args, "s", &input)) {
    return NULL;
  }

  return Py_BuildValue("s", say_hello(input));
}

static PyMethodDef HelloMethods[] = {
 { "hello", (PyCFunction)hello, METH_VARARGS, "Say Hello" },
 { NULL, NULL, 0, NULL }
};

static struct PyModuleDef say =
{
    PyModuleDef_HEAD_INIT,
    "say",
    "",
    -1,
    HelloMethods
};

PyMODINIT_FUNC PyInit_say(void)
{
    return PyModule_Create(&say);
}

setup.py: to build your python package

import os
from distutils.core import setup, Extension

path = os.path.join(os.path.expanduser('~'), '.ava', 'plugins', 'say', 'say.cpp')
module = Extension('say', sources=[path])
setup(name = 'packagename',
    version='1.0',
    description = 'a test package',
    ext_modules = [module])