import os.path import sys from PyQt5 import uic from PyQt5.QtWidgets import QApplication, QMainWindow from MainWindow import Ui_MainWindow basedir = os.path.dirname(__file__) class MainWindow(QMainWindow, Ui_MainWindow): def __init__(self): super().__init__() self.setupUi(self) app = QApplication(sys.argv) window = MainWindow() window.show() app.exec_()