[Python知识库]c++调用 python

1. ?//要点1： 千万别用\\路径，尽量用/
2. //要点2： 先导入包路径
3. //要点3： cmd进入目录手动测试一下代码
4. //要点4 ：多用PyErr_Print 就知道为什么错了

Py_Initialize();

?? ?PyRun_SimpleString("import sys");
?? ?PyRun_SimpleString("sys.path.append('./')");
?? ?

??PyRun_SimpleString("sys.path.append('C:/Users/Administrator/PycharmProjects/untitled/venv/Lib/site-packages')");
?? ?
PyRun_SimpleString("print(sys.path)");

PyObject *pName, *pModule, *pDict, *pFunc, *pArgs;

??if(!(pName = PyUnicode_FromString("main")))
?? ??? ?return NULL;
?? ?pModule = PyImport_Import(pName);
? ??
?? ??? ?PyErr_Print();
?? ??? ?return -1;
?? ?}
?? ?pDict = PyModule_GetDict(pModule);
?? ?if (!pDict) {
?? ??? ?return -1;
?? ?}

?? ?// 找出函数名为add的函数
?? ?
?? ?pFunc = PyDict_GetItemString(pDict, "GetBlock");
?? ?if (!pFunc || !PyCallable_Check(pFunc)) {
?? ??? ?return -1;
?? ?}

? ?pArgs = PyTuple_New(0);

?? ?PyObject * pReturnTuple = PyObject_CallObject(pFunc, pArgs);
?? ?
?? ?const char* pp = PyUnicode_AsUTF8(pReturnTuple);

?? ?Py_Finalize();