from PyQt5 import QtCore, QtGui, QtWidgets
##########################################
import sys, os
import datetime
import shutil

#########主函数入口 #########
if __name__ == ‘__main__‘:
    app = QtWidgets.QApplication(sys.argv)
    mainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(mainWindow)
    mainWindow.show()
    sys.exit(app.exec_())

from PyQt5.Qt import *


if __name__ == ‘__main__‘:
    import sys
    app = QApplication(sys.argv)
    # QWidget控件的父子关系()
    window = Window()
    # window = QWidget()
    window.show()
    sys.exit(app.exec_())