用C/C++扩展Python（Extending Python with C or C++）

1.简单示例：

1.1 span_system.cpp

//span_system.cpp
#include <Python.h>
static PyObject *
spam_system(PyObject *self, PyObject *args)
{
const char *command;
int sts;
if (!PyArg_ParseTuple(args, "s", &command))
return NULL;
sts = system(command);
return Py_BuildValue("i", sts);
}
static PyMethodDef libmypyext_methods[]
{
{"spam_system", spam_system, METH_VARARGS, "Description"}，
{0, 0}
};
PyMODINIT_FUNC initlibgongmingpyext()
{
Py_InitModule3("libmypyext", libmypyext_methods, "A Python Extension for Test");
}

1.2 编译链接成so

g++ -o libmypyext.so -export-dynamic -m64 -shared span_system.cpp

1.3 python调用

#span_system.py
import libmypyext
def spam_system(command):
print libmypyext.spam_system()
if __name__ == '__main__':
if len(sys.argv) == 2:
spam_system(sys.argv[1])
else:
print '''python span_system.py your_command'''
sys.exit()