t2.cpp

#include <python2.7/Python.h>
#include <iostream>
#include <string>

void printDict(PyObject* obj)
{
	if(!PyDict_Check(obj))
		return ;

	PyObject *k, *keys;
	keys = PyDict_Keys(obj);

	for(int i=0; i < PyList_GET_SIZE(keys); i++)
	{
		k = PyList_GET_ITEM(keys, i);
		char *c_name = PyString_AsString(k);
		printf("%s\n", c_name);
	}
}

int main(void)
{
	Py_Initialize();
	if(!Py_IsInitialized())
		return -1;
	
	PyRun_SimpleString("import sys");
	//where you put your py file
	PyRun_SimpleString("sys.path.append('../')");
	//Import 
	PyObject* pModule = PyImport_ImportModule("pc");//no *.py
	if(!pModule)
	{
		printf("can't open python file!\n");
		return -1;
	}
	//Dict module
	PyObject* pDict = PyModule_GetDict(pModule);
	if(!pDict)
	{
		printf("can't find dictionary.\n");
		return -1;
	}
	printDict(pDict);

	PyObject *pFunHi = PyDict_GetItemString(pDict, "sayHi");
	PyObject_CallFunction(pFunHi, "s", "yourname");// @para1: obj, @para2: name
	//release
	Py_DECREF(pFunHi);
	
	//Contruct a obj , call it's function
	//Second Class
	PyObject *pClassSecond = PyDict_GetItemString(pDict , "Second");
	if(!pClassSecond)
	{
		printf("can't find second class.\n");
		return -1;
	}
	//Person Class
	PyObject *pClassPerson = PyDict_GetItemString(pDict, "Person");
	if(!pClassPerson)
	{
		printf("can't find Person class.\n");
		return -1;
	}
	//Construct Second Instance
	PyObject* pInstanceSecond = PyInstance_New(pClassSecond, NULL, NULL);
	if(!pInstanceSecond)
	{
		printf("can't create second instance.\n");
		return -1;
	}
	//Construct Person Instance
	PyObject *pInstancePerson = PyInstance_New(pClassPerson, NULL, NULL);
	if(!pInstancePerson)
	{
		printf("can't create Person instance.\n");
		return -1;
	}

	//pass Person Instance to Second Instance 
	PyObject_CallMethod(pInstanceSecond, "invoke", "O", pInstancePerson);
	PyObject_CallMethod(pInstanceSecond, "method2", "O", pInstancePerson);

	//call execute a py file
	PyRun_SimpleString("exec(compile(open('./1.py').read(),'1.py', 'exec'),locals(), globals())");
	//release
	Py_DECREF(pInstanceSecond);
	Py_DECREF(pInstancePerson);
	Py_DECREF(pClassSecond);
	Py_DECREF(pClassPerson);
	Py_DECREF(pModule);
	Py_Finalize();

	return 0;
}