How to use the pyinstaller.main.MainWindow.FormWidget function in pyinstaller

def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.setWindowTitle("PID GUI application")
        self.setWindowIcon(QIcon(resource_path('img/icon.png')))

        self.formWidget = self.FormWidget()
        self.formWidget.initUI(self)
        self.setCentralWidget(self.formWidget)

        exitAction = QAction(QIcon(resource_path('img/exit.png')), 'Exit', self)
        exitAction.setShortcut('Ctrl+Q')
        exitAction.setStatusTip('Exit application')
        exitAction.triggered.connect(app.quit)

        infoAction = QAction(QIcon(resource_path('img/info.png')), 'Info', self)
        infoAction.setShortcut('Ctrl+I')
        infoAction.setStatusTip('Info & about')
        self.aboutWindow = AboutWindow()
        infoAction.triggered.connect(self.aboutWindow.show)

        settingsAction = QAction(QIcon(resource_path('img/settings.png')), 'Settings', self)
        settingsAction.setShortcut('Ctrl+P')