详解C++调用Python脚本中的函数的实例代码

#include \"stdafx.h\" 
#include <stdlib.h>
#include <iostream> 
#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 
  Py * pModule = PyImport_ImportModule(\"mytest\");
  if (!pModule)
  {
    cout << \"Python get module failed.\" << endl;
    return 0;
  }
  cout << \"Python get module succeed.\" << endl;
  Py  * pFunc = NULL;
  pFunc = Py _GetAttrString(pModule, \"Hello\");
  PyEval_Call (pFunc, NULL);
  //获取Insert模块内_add函数 
  Py * pv = Py _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 
  Py * args = PyTuple_New(2);
  //将Long型数据转换成Python可接收的类型 
  Py * arg1 = PyLong_FromLong(4);
  Py * 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 
  Py * pRet = Py _Call (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;
}