from PySide6.QtWidgets import QWidget, QApplication, QFileDialog, QMainWindow from Ui_tool_panel import Ui_MainWindow from database_tools_2 import * class MyWindow(QMainWindow,Ui_MainWindow): def __init__(self): super().__init__() self.setupUi(self) if __name__ == '__main__': app = QApplication([]) windows = MyWindow() windows.show() app.exec()