详解C++调用Python脚本中的函数的实例代码

#include "stdafx.h" 
#include 
#include  
#include "include\Python.h"
using namespace std;
int _tmain(int argc, _TCHAR* argv[])
{
  //初始化Python环境 
  Py_Initialize();
  PyRun_SimpleString("import sys");
  //添加Insert模块路径 
  //PyRun_SimpleString(chdir_cmd.c_str());
  PyRun_SimpleString("sys.path.append('./')");
  //导入模块 
  PyObject* pModule = PyImport_ImportModule("mytest");
  if (!pModule)
  {
    cout << "Python get module failed." << endl;
    return 0;
  }
  cout << "Python get module succeed." << endl;
  PyObject * pFunc = NULL;
  pFunc = PyObject_GetAttrString(pModule, "Hello");
  PyEval_CallObject(pFunc, NULL);
  //获取Insert模块内_add函数 
  PyObject* pv = PyObject_GetAttrString(pModule, "_add");
  if (!pv || !PyCallable_Check(pv))
  {
    cout << "Can't find funftion (_add)" << endl;
    return 0;
  }
  cout << "Get function (_add) succeed." << endl;
  //初始化要传入的参数，args配置成传入两个参数的模式 
  PyObject* args = PyTuple_New(2);
  //将Long型数据转换成Python可接收的类型 
  PyObject* arg1 = PyLong_FromLong(4);
  PyObject* arg2 = PyLong_FromLong(3);
  //将arg1配置为arg带入的第一个参数 
  PyTuple_SetItem(args, 0, arg1);
  //将arg1配置为arg带入的第二个参数 
  PyTuple_SetItem(args, 1, arg2);
  //传入参数调用函数，并获取返回值 
  PyObject* pRet = PyObject_CallObject(pv, args);
  if (pRet)
  {
    //将返回值转换成long型 
    long result = PyLong_AsLong(pRet);
    cout << "result:" << result << endl ;
  }
  Py_Finalize();
  system("pause");
  return 0;
}