I’m developing a desktop application using PyQt5 in Python, and I’m interested in incorporating QML for the user interface. I’ve read that QML provides a more declarative way to design UIs, which seems like a great fit for my project. However, I’m having trouble understanding how to properly integrate QML with PyQt5.

Here are a few specific points I’m struggling with:

Basic Setup: What are the essential steps to set up a PyQt5 project that uses QML for its UI?
Loading QML Files: How can I load and display a QML file in a PyQt5 application?
Communication Between QML and Python: What is the best way to handle interactions between QML and the underlying Python logic? For example, how can I call Python functions from QML and vice versa?
Example Project Structure: Could you provide an example of a simple project structure that includes both PyQt5 and QML files?

Here’s a basic outline of my current setup:

python code :

# main.py
import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QApplication
from PyQt5.QtQuick import QQuickView

app = QApplication(sys.argv)
view = QQuickView()
view.setSource(QUrl('main.qml'))
view.show()
sys.exit(app.exec_())

qml code :

import QtQuick 2.0

Rectangle {
    width: 360
    height: 360

    Text {
        id: helloText
        text: "Hello, World!"
        anchors.centerIn: parent
    }
}

While this runs and displays a window with “Hello, World!” in the center, I’m unsure if this is the correct or most efficient way to integrate QML with PyQt5.

Any guidance, best practices, or examples would be greatly appreciated!