C++调用Python函数得到list并传递到新函数中

#include 
#define PY_SSIZE_T_CLEAN
#include "Python.h"
#include "listobject.h"

using namespace std;

//以下是python中的代码

// def MakeList() :
// 	list_a = [1, 2, 3]
// 	list_b = [4, 5, 6]
// 	return list_a, list_b
// 
// 	def ReadList(list1) :
// 	print(list1[0])
// 	return list1[1]


int main()
{

	Py_SetPythonHome(L"D:/anaconda3");	//设置python3主目录

	Py_Initialize();	//初始化Python



//引入头文件
 	PyRun_SimpleString("import sys");
  	PyRun_SimpleString("import numpy as np");
	PyRun_SimpleString("import tensorflow as tf");

//设置python文件存放的文件夹
 	PyRun_SimpleString("sys.path.append('./')");
 
 	PyObject * pModule = NULL;	//python文件名
 	PyObject * pFunc = NULL;	//函数名1
	PyObject * pFunc2 = NULL;	//函数名2
 
 	pModule = PyImport_ImportModule("testlist");	//加载python文件，文件名不加.py
 
 	if (!pModule)
 	{
 		std::cout << "文件没加载到\n";
 		exit(0);
 	}
 
 	pFunc = PyObject_GetAttrString(pModule, "MakeList");
 
 	if (!pFunc)
 	{
 		std::cout << "函数1没加载到\n";
 		exit(0);
 	}
	PyObject *pArgs = nullptr;
 
 	PyObject *pReturn = PyEval_CallObject(pFunc, 0);
 
	PyObject *plist1 = nullptr, *plist2 = nullptr;

	if (pReturn&&PyTuple_Check(pReturn)) { //检查是否为List对象
		plist1 = PyTuple_GetItem(pReturn, 0);
		plist2 = PyTuple_GetItem(pReturn, 1);

		PyObject *ListItem = PyList_GetItem(plist1, 0);
		int  nResult = 0;

		PyArg_Parse(ListItem, "i", &nResult);
		cout << nResult << " <== Read from MakeList\n"; //输出元素
	}
	else {
		cout << "Not a turple" << endl;
	}


	pFunc2 = PyObject_GetAttrString(pModule, "ReadList");

	if (!pFunc2)
	{
		std::cout << "函数2没加载到\n";
		exit(0);
	}

// 	PyObject *pListNew = PyList_New(3);
// 	PyList_SetItem(pListNew, 0, Py_BuildValue("i", 99));
// 	PyList_SetItem(pListNew, 1, Py_BuildValue("i", 89));
// 	PyList_SetItem(pListNew, 2, Py_BuildValue("i", 79));

	pArgs = PyTuple_New(1);

	PyTuple_SetItem(pArgs, 0, plist1);

	PyObject *pReturn2 = PyEval_CallObject(pFunc2, pArgs);

	if (pReturn2)
	{
		int  nResult = 0;

		PyArg_Parse(pReturn2, "i", &nResult);
		cout << nResult << " 《== Read from ReadList\n"; //输出元素
	}


    // 释放new reference的对象
 	Py_DECREF(pArgs);
 	Py_DECREF(pReturn);
	Py_DECREF(pReturn2);
	Py_DECREF(plist1);
	Py_DECREF(plist2);
 	Py_DECREF(pFunc);
	Py_DECREF(pFunc2);
 	Py_DECREF(pModule);

//  下面测试直接运行python文件
//	std::cout << "result: " << nResult << "\n";

// 	FILE *pFile = fopen("test1.py", "r");
// 
// 	PyRun_SimpleFile(pFile, "test1.py");
// 
// 	fclose(pFile);

	Py_Finalize();    //结束Python



}