python返回值

[cpp]view plaincopyprint?1.#include <iostream>2.#include <Python.h>3.ing namespace std;5.6.void HelloWorld();7.void Add();8.void TestTransferDict();9.void TestClass();10.11.int main()12.{13.cout << "Starting Test..." << endl;14.15.cout << "HelloWorld()-------------" << endl;16.HelloWorld();17.cout << "Add()--------------------" << endl;18.Add();19.cout << "TestDict-----------------" << endl;20.TestTransferDict();21.cout << "TestClass----------------" << endl;22.TestClass();23.24.system("pause");25.return 0;26.}27.28.//调用输出"Hello World"函数29.void HelloWorld()30.{31.Py_Initialize();//使用python之前，要调用Py_Initialize();这个函数进行初始化32.PyObject * pModule = NULL;//声明变量33.PyObject * pFunc = NULL;//声明变量34.pModule =PyImport_ImportModule("Test001");//这里是要调用的Python文件名35.pFunc= PyObject_GetAttrString(pModule, "HelloWorld"); //这里是要调用的函数名36.PyEval_CallObject(pFunc, NULL); //调用函数,NULL表示参数为空37.Py_Finalize();//调用Py_Finalize,这个和Py_Initialize相对应的.38.}39.40.//调用Add函数,传两个int型参数41.void Add()42.{43.Py_Initialize();44.45.PyObject * pModule = NULL;46.PyObject * pFunc = NULL;47.pModule =PyImport_ImportModule("Test001");//Test001:Python文件名48.pFunc= PyObject_GetAttrString(pModule,"add");//Add:Python文件中的函数名 //创建参数49.PyObject *pArgs = PyTuple_New(2); //函数调用的参数传递均是以元组的形式打包的,2表示参数个数50.PyTuple_SetItem(pArgs, 0, Py_BuildValue("i", 5));//0---序号i表示创建int型变量51.PyTuple_SetItem(pArgs, 1, Py_BuildValue("i", 7));//1---序号//返回值52.PyObject *pReturn = NULL;53.pReturn = PyEval_CallObject(pFunc, pArgs);//调用函数54.//将返回值转换为int类型55.int result;56.PyArg_Parse(pReturn, "i", &result);//i表示转换成int型变量57.cout << "5+7 = " << result << endl;58.59.Py_Finalize();60.}61.62.//参数传递的类型为字典63.void TestTransferDict()64.{65.Py_Initialize();66.67.PyObject * pModule = NULL;68.PyObject * pFunc = NULL;69.pModule =PyImport_ImportModule("Test001");//Test001:Python文件名70.pFunc= PyObject_GetAttrString(pModule, "TestDict"); //Add:Python文件中的函数名71.//创建参数:72.PyObject *pArgs = PyTuple_New(1);73.PyObject *pDict = PyDict_New(); //创建字典类型变量74.PyDict_SetItemString(pDict, "Name", Py_BuildValue("s", "WangYao")); //往字典类型变量中填充数据75.PyDict_SetItemString(pDict, "Age", Py_BuildValue("i", 25)); //往字典类型变量中填充数据76.PyTuple_SetItem(pArgs, 0, pDict);//0---序号将字典类型变量添加到参数元组中77.//返回值78.PyObject *pReturn = NULL;79.pReturn = PyEval_CallObject(pFunc, pArgs);//调用函数80.//处理返回值:81.int size = PyDict_Size(pReturn);82.cout << "返回字典的大小为: " << size << endl;83.PyObject *pNewAge = PyDict_GetItemString(pReturn, "Age");84.int newAge;85.PyArg_Parse(pNewAge, "i", &newAge);86.cout << "True Age: " << newAge << endl;87.88.Py_Finalize();89.}90.91.//测试类92.void TestClass()93.{94.Py_Initialize();95.96.PyObject * pModule = NULL;97.PyObject * pFunc = NULL;98.pModule =PyImport_ImportModule("Test001");//Test001:Python文件名99.pFunc= PyObject_GetAttrString(pModule, "TestDict"); //Add:Python文件中的函数名100.//获取Person类101.PyObject *pClassPerson = PyObject_GetAttrString(pModule, "Person");102.//创建Person类的实例103.PyObject *pInstancePerson = PyInstance_New(pClassPerson, NULL, NULL);104.//调用方法105.PyObject_CallMethod(pInstancePerson, "greet", "s", "Hello Kitty"); //s表示传递的是字符串,值为"Hello Kitty"106.107.Py_Finalize();108.}4. python代码[python]view plaincopyprint?1.#Test001.py2.def HelloWorld():3.print"Hello World"4.def add(a, b):5.return a+b6.def TestDict(dict):7.print dict8. dict["Age"] = 179.return dict10.class Person:11.def greet(self, greetStr):12.print greetStr13.#print add(5,7)14.#a = raw_input("Enter To Continue...")。