main.py

import sys

from PyQt5 import QtCore
from PyQt5.QtWidgets import QApplication, QMainWindow

from UI import UI


if __name__ == '__main__':
 QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_EnableHighDpiScaling)
 app = QApplication(sys.argv)
 MainWindow = QMainWindow()
 ui = UI.Ui_Dialog()
 ui.setupUi(MainWindow)
 MainWindow.show()
 sys.exit(app.exec_())