INCLUDEPATH += C:\Users\Administrator\AppData\Local\Programs\Python\Python37\include
LIBS += -LC:\Users\Administrator\AppData\Local\Programs\Python\Python37\libs -lpython37
//注意：-L 和 PATH 之間不能有空格

#ifndef
#define
 
#include <QMainWindow>
#include <Python.h>
#include <iostream>
#include <QDebug>
 
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
 
class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
 
private:
    Ui::MainWindow *ui;
};
#endif// MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
    //Python初始化
    Py_Initialize();
    if( !Py_IsInitialized() )
        qDebug()<<"初始化失敗";
 
    //導(dǎo)入sys模塊設(shè)置模塊地址
    PyRun_SimpleString("import sys");
    PyRun_SimpleString("sys.path.append('./')");
    //QString setSysPath = QString("sys.path.append('%1')").arg(QCoreApplication::applicationDirPath());
    //PyRun_SimpleString(setSysPath.toStdString().c_str());
 
    //創(chuàng)建模塊指針
    PyObject* pModule = PyImport_ImportModule("Py_Module");
    if (!pModule)
        qDebug()<<"獲取模塊指針失敗";
 
    //創(chuàng)建函數(shù)指針
    PyObject* pFunc= PyObject_GetAttrString(pModule,"add");
    if(!pFunc)
        qDebug()<<"獲取函數(shù)指針失敗";
 
    //創(chuàng)建函數(shù)參數(shù)，方法1
    PyObject* pPara = PyTuple_New(2);        // 2個(gè)參數(shù)
    PyTuple_SetItem(pPara, 0, Py_BuildValue("i",1));  //參數(shù)1為int型 1
    PyTuple_SetItem(pPara, 1, Py_BuildValue("i",2));  //參數(shù)2為int型 2
    //pPara = Py_BuildValue("(i,i)",1,2); //連寫方式
 
    /*
    PyObject* pPara = PyTuple_New(2);        // 2個(gè)參數(shù)
    PyTuple_SetItem(pPara, 0, Py_BuildValue("s","Hello"));  //參數(shù)1為String型 "Hello"
    PyTuple_SetItem(pPara, 1, Py_BuildValue("s","World!"));  //參數(shù)2為String型 "World!"
    */
    
    /// s 將C字符串轉(zhuǎn)換成Python對(duì)象，如果C字符串為空，返回NONE
    /// c 將C類型的char轉(zhuǎn)換成長度為1的Python字符串對(duì)象
    /// i 將一個(gè)C類型的int轉(zhuǎn)換成Python int對(duì)象
    /// l 將C類型的long轉(zhuǎn)換成Pyhon中的int對(duì)象
    /// f 將C類型的float轉(zhuǎn)換成python中的浮點(diǎn)型對(duì)象
    /// d 將C類型的double轉(zhuǎn)換成python中的浮點(diǎn)型對(duì)象
 
    //創(chuàng)建函數(shù)參數(shù)，方法2
    PyObject* args = PyTuple_New(2);        // 2個(gè)參數(shù)
    PyObject* arg1 = PyLong_FromLong(4);    // 參數(shù)一設(shè)為4
    PyObject* arg2 = PyLong_FromLong(3);    // 參數(shù)二設(shè)為3
    PyTuple_SetItem(args, 0, arg1);
    PyTuple_SetItem(args, 1, arg2);
 
    //調(diào)用Python函數(shù)，傳入元組參數(shù)pPara
    PyObject *FuncBack = PyObject_CallObject(pFunc,pPara);
    //PyObject_CallObject(pFunc,nullptr); //無參數(shù)調(diào)用
 
    //FuncBack是返回值指針，轉(zhuǎn)換獲取返回值
    int res = 0;
    PyArg_Parse(FuncBack,"i",&res);
    qDebug()<<"返回值: "<<res;
 
    //調(diào)用結(jié)束，銷毀
    Py_Finalize();
 
}
 
MainWindow::~MainWindow()
{
    delete ui;
}

PyType_Slot *slots; object.h(445) : error C2059: 語法錯(cuò)誤:“;”
object.h(445) : error C2238: 意外的標(biāo)記位于“;”之前