#include <Python.h>    int main(int argc, char *argv[])
{Py_SetProgramName(argv[0]);Py_Initialize();   PyRun_SimpleString("print ('Hello Python!')\n");Py_Finalize();return 0;}

gcc -Wall cpython01.c -o cpython01.out -I/usr/include/python2.7 -lpython2.7

#!/usr/bin/python3
#-*- coding:utf-8 -*-  def great_function(a):return a + 1     

#include <stdio.h>
#include <Python.h>

int include_module_from_py(int a)
{int res = 0;PyObject *pModule, *pFunc;PyObject *pArgs, *pValue;//import great_module.py pModule = PyImport_Import(PyString_FromString("great_module"));  ////great_module.great_function(args)pFunc = PyObject_GetAttrString(pModule, "great_function");//build argspArgs = PyTuple_New(1);                           //Pyxxx_new录创建类型为xxx的变量PyTuple_SetItem(pArgs, 0, PyInt_FromLong(a));     //若a为tuple, 则a[i]=b对应于 PyTuple_SetItem(a, i, b)//callpValue = PyObject_CallObject(pFunc, pArgs);res = PyInt_AsLong(pValue);   return res;
}int main()
{Py_Initialize();printf("res = %d\n", include_module_from_py(3));Py_Finalize();return 0;
}

export PYTHONPATH=.:$PYTHONPATH

gcc -Wall include_module_from_py.c -o include_module.out -I/usr/include/python2.7 -lpython2.7

#include <stdio.h>
#include <Python.h>

int great_function(int a)
{return a + 1;
}static PyObject * _great_function(PyObject *self, PyObject *args)
{int _a; int res;//负责将Python的参数转换为C的参数if (!PyArg_ParseTuple(args, "i", &_a)){   return NULL;}   res = great_function(_a);return PyLong_FromLong(res);}//导出表, 负责告诉Python这个模块有哪些函数可以被Python调用
static PyMethodDef GreateModuleMethods[] = { {   "great_function",         // 函数名_great_function,          // 包裹函数METH_VARARGS,             // 参数变长 ""                        // 说明性文字},  { NULL, NULL, 0, NULL }       //总是如此
};//导出函数, 名字: module名称+前缀init
PyMODINIT_FUNC initgreat_module()
{(void) Py_InitModule("great_module", GreateModuleMethods);
}

gcc -fPIC -shared great_module.c -o great_module.so -I/usr/include/python2.7 -lpython2.7

#include <stdio.h>

int add_int(int a, int b)
{return a + b;
}double add_double(double a, double b)
{return a + b;
}

gcc -shared -Wl,-soname,adder -o adder.so -fPIC add.c

#!/usr/bin/python3
#-*- coding:utf-8 -*-from ctypes import *adder = CDLL('./adder.so')res_int = adder.add_int(4, 5)
print("4 + 5 = %d " % (res_int))a = c_double(5.5)
b = c_double(4.1)add_double = adder.add_double
add_double.restype = c_double
print("5.5 + 4.1 = ", str(add_double(a, b)))

#include <iostream>
using namespace std;class Example {public:void say_hello();};

#include "example.h"void Example::say_hello()
{cout << "hello\n";
}

%module example
%{
#include "example.h"
%}
%include "example.h"

#!/usr/bin/python3
#-*- coding:utf-8 -*-"""
setup.py file for SWIG C\+\+/Python example
"""
from distutils.core import setup, Extensionexample_module = Extension('_example',sources=['example.cpp', 'example_wrap.cxx',],
)setup (name = 'example',version = '0.1',author = "douzi",description = """Simple swig C\+\+/Python example""",ext_modules = [example_module],py_modules = ["example"],
)

swig -c\+\+ -python example.i
python3 setup.py build_ext --inplace