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配置

1：python的include和libs拷贝到自己的c++工程目录下

//初始化Python环境  Py_Initialize();PyRun_SimpleString("import sys");//添加Insert模块路径  PyRun_SimpleString("sys.path.append('./')");//导入模块  python文件名PyObject* pModule = PyImport_ImportModule("hello");if (!pModule){    cout << "Python get module failed." << endl;    return 0;}cout << "Python get module succeed." << endl;//调用python文件内的函数名PyObject* pFunc = NULL;pFunc = PyObject_GetAttrString(pModule, "GetImgNameByEveryDir");/// 获得返回列表PyObject* pReturn=PyEval_CallObject(pFunc, NULL);char* cstr;if (pReturn && PyList_Check(pReturn)) { //检查是否为List对象    int SizeOfList = PyList_Size(pReturn);//List对象的大小    for (int i = 0; i < SizeOfList; i++)    {        PyObject* ListItem = PyList_GetItem(pReturn, i);//根据下标获取值        PyArg_Parse(ListItem, "s", &cstr);//接收该下标的值传入c++指针，列表的值为字符串类型，所有为“s”        cout << cstr << endl;//打印内容}

6：传参数

//调用python文件内的函数名PyObject* pFunc = NULL;pFunc = PyObject_GetAttrString(pModule, "GetImgNameByEveryDir");/// 获得返回列表PyObject* pReturn=PyEval_CallObject(pFunc, NULL);//传字符串PyObject* pArg = NULL;//pArg = Py_BuildValue("(s,s)", "my is c++ test!","jjjj");//传整形//传入参数调用函数，并获取返回值  pArg = Py_BuildValue("(i,i)", 10, 11);PyObject* pRet = PyObject_CallObject(pFunc , pArg);char* cstr;if (pRet){    //将返回值转换成字符型      PyArg_Parse(pRet, "s", &cstr);    //        cout << cstr << endl;    cout << "result:" << cstr << endl;}

小应用

获取任意文件夹下任意文件的完整路径。

源码

hello.py

import osdef GetImgNameByEveryDir():      # Input   Root Dir and get all img in per Dir.    # Out     Every img with its filename and its dir and its path      file_dir="F:\\video_data\\front"    videoProperty=".mp4"    FileNameWithPath = []    FileName         = []    FileDir          = []    for root, dirs, files in os.walk(file_dir):          for file in files:              if os.path.splitext(file)[1] in videoProperty:                  FileNameWithPath.append(os.path.join(root, file))  # 保存图片路径                FileName.append(file)                              # 保存图片名称                FileDir.append(root[len(file_dir):])               # 保存图片所在文件夹    #print(FileNameWithPath)    return FileNameWithPath    def GetImgNameByEveryDir(file_dir,videoProperty):      # Input   Root Dir and get all img in per Dir.    # Out     Every img with its filename and its dir and its path    FileNameWithPath = []    FileName         = []    FileDir          = []    for root, dirs, files in os.walk(file_dir):          for file in files:              if os.path.splitext(file)[1] in videoProperty:                  FileNameWithPath.append(os.path.join(root, file))  # 保存图片路径                FileName.append(file)                              # 保存图片名称                FileDir.append(root[len(file_dir):])               # 保存图片所在文件夹    #print(FileNameWithPath)    return FileNameWithPath

main.cpp

#include 
   
    #include
    
     #include
     
      #include 
      
       #include 
       
        #include 
        
         #include "include/Python.h"using namespace std;void Cpp_python_get_filePath(const char* py_file_name,const char* funCpp_name, const char* dir_path, const char* file_type) { /* py_file_name：python文件名，不带后缀 funCpp_name：函数名 dir_path：需要查找的文件夹 file_type：需要的文件类型 */ //初始化Python环境 Py_Initialize(); PyRun_SimpleString("import sys"); //添加Insert模块路径 //PyRun_SimpleString(chdir_cmd.Cpp_str()); PyRun_SimpleString("sys.path.append('./')"); //导入模块 PyObject* pModule = PyImport_ImportModule(py_file_name); if (!pModule) { cout << "Python get module failed." << endl; } cout << "Python get module succeed." << endl; //获取Insert模块内funCpp_name函数 PyObject* pv = PyObject_GetAttrString(pModule,funCpp_name); if (!pv || !PyCallable_Check(pv)) { cout << "Can't find funftion "<
         
          << endl; } cout << "Get function "<
          
           <<" succeed." << endl; //传字符串 PyObject* pArg = NULL; pArg = Py_BuildValue("(s,s)",dir_path, file_type); PyObject* pRet = PyObject_CallObject(pv, pArg); char* cstr; if (pRet) { int SizeOfList = PyList_Size(pRet);//List对象的大小 for (int i = 0; i < SizeOfList; i++) { PyObject* ListItem = PyList_GetItem(pRet, i); PyArg_Parse(ListItem, "s", &cstr); cout << cstr << endl; } } Py_Finalize();}int main(){ Cpp_python_get_filePath("hello","GetImgNameByEveryDir","C:\\Users\\Administrator\\Desktop\\test_video",".mp4"); return 0;}
          
         
        
       
      
     
    
   

运行截图

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