pytoqml2

(You can also check this code in the repository)

import os
import sys
from PySide6.QtCore import QObject, QTimer, QUrl, Signal, Slot
from PySide6.QtGui import QGuiApplication
from PySide6.QtQuick import QQuickView


class RotateValue(QObject):
    valueChanged = Signal(int, arguments=['val'])

    def __init__(self):
        super(RotateValue, self).__init__()
        self.r = 0

    @Slot()
    def increment(self):
        self.r = self.r + 10
        self.valueChanged.emit(self.r)


if __name__ == '__main__':
    app = QGuiApplication(sys.argv)
    view = QQuickView()

    rotatevalue = RotateValue()
    timer = QTimer()
    timer.start(2000)
    context = view.rootContext()
    context.setContextProperty("rotatevalue", rotatevalue)

    qmlFile = os.path.join(os.path.dirname(__file__), 'view.qml')
    view.setSource(QUrl.fromLocalFile(os.path.abspath(qmlFile)))
    if view.status() == QQuickView.Error:
        sys.exit(-1)

    timer.timeout.connect(rotatevalue.increment)

    view.show()
    res = app.exec_()
    # Deleting the view before it goes out of scope is required to make
    # sure all child QML instances are destroyed in the correct order.
    del view
    sys.exit(res)
import QtQuick 2.0
import QtQml 2.0

Rectangle {
    id: page

    width: 500; height: 200
    color: "lightgray"

    Text {
        id: helloText
        text: "Hello world!"
        anchors.horizontalCenter: page.horizontalCenter
        y: 30
        font.pointSize: 24; font.bold: true
    }

    Connections {
        target: rotatevalue
        function onValueChanged(val) {
            helloText.rotation = val
        }
    }
}