QT中调用Python模块函数

1.环境：

window10， python3.8， qt5.13

2. 新建C++控制台工程cCallPython

3. 添加外部库Python

4. 在main.cpp中编写调用程序

#include 

#include 

int main(int argc, char *argv[])

{

    QCoreApplication a(argc, argv);

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

    if(argc < 3)

    {

        printf("Usage：exe_name python_source function_namen");

        return 1;

    }

    //Initialize the Python Interpreter

    Py_Initialize();

    //Build the name object

    pName = PyUnicode_FromString(argv[1]);

    // Load the module object

    pModule = PyImport_Import(pName);

    // pDict is a borrowed reference

    pDict = PyModule_GetDict(pModule);

    // pFunc is also a borrowed reference

    pFunc = PyDict_GetItemString(pDict, argv[2]);

    if(PyCallable_Check(pFunc))

    {

        PyObject_CallObject(pFunc, nullptr);

    } else

    {

        PyErr_Print();

    }

    // Clean up

    Py_DECREF(pModule);

    Py_DECREF(pName);

    // Finish the Python Interpreter

    Py_Finalize();

    return a.exec();

}

5. Python脚本函数py_function.py:

'''py_function.py - Python source designed to '''
'''demonstrate the use of python embedding'''

def multiply():
    c = 12345*6789
    print("The result of 12345 x 6789 :" + str(c))
    
    return c

6. 编译后调用测试：

7. 编译错误修改：

如果遇到意外的标记位于“;”之前，请在编译错误处作如下修改