import sys
from PySide6.QtWidgets import QApplication, QWidget, QMainWindow
from demo1 import Ui_MainWindow

class MyWindow(Ui_MainWindow,QMainWindow):
    def __init__(self):
        super().__init__()
        self.setupUi(self)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    window = MyWindow()
    window.show()
    sys.exit(app.exec())