Qt5在Python脚本中调用函数

Question

I have a simple Qt5 project with a button and a text field, I did create also a py file in the project to check how to call functions in python files, from Qt.

Although now I am stuck; I have my testcpp.h and testcpp.cpp, where I define a string and a function to print that string; although I am not sure how do I call now the function in the python file, which simply print a string.

I want to call the Qt function, and have it call the function in the python file; how do you do that?

testcpp.h file:

#ifndef TESTCPP_H
#define TESTCPP_H

#include <QObject>
#include <QString>

class testcpp : public QObject
{
    Q_OBJECT
public:
    explicit testcpp(QObject *parent = nullptr);

    QString getTest_to_print() const;
    void setTest_to_print(const QString &value);

signals:

public slots:

private:
    QString test_to_print;

};

#endif // TESTCPP_H

testcpp.cpp file:

#include "testcpp.h"

testcpp::testcpp(QObject *parent) : QObject(parent)
{

}

QString testcpp::getTest_to_print() const
{
    return test_to_print;
}

void testcpp::setTest_to_print(const QString &value)
{
    test_to_print = value;
}

void testcpp::PrintViaPython(QString &test_to_print)
{



}

Python file:

# -*- coding: utf-8 -*-

try:
    from PySide import QtWidgets
except:
    from PyQt5 import QtWidgets


class test_python:
    def __init__(self):


    def testme(self, string_to_print):
        print(string_to_print)

Answer 1

Any IDE can create any type of file, that does not imply that it can execute, and that is the case of QtCreator.

Answering the background of the problem I recommend using the PythonQt library, you could do it from scratch through SIP and the python.h library but it is unnecessary if there is a library I suggest.