每秒更新QtWidget数据

Question

我想每秒钟更新一次LCD上显示的值。我是PyQt的新手。

class Ui_MainWindow(object):


    def setupUi(self, MainWindow):

        [[UI configuration goes Here]]

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        x =  datetime.datetime.now()
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label_5.setText(_translate("MainWindow",x.strftime("%I:%M:%S %p")))
        self.lcdNumber_2.display(22222.22222)
        self.lcdNumber.display(1255.45258)
        # self.Time(MainWindow)

    def Time(self, MainWindow):
        i = 0
        while i<2 :
            time.sleep(1)
            self.lcdNumber_2.display(3333.3333)
            self.lcdNumber.display(9999.9999)

def main():
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    main = Ui_MainWindow()
    main.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

if __name__ == "__main__":
    main()

我想要的是每秒钟更改一次该值。 我将从另一个函数中调用这些值。