定时器事件QTimerEvent，开启多个定时器，利用定时器和QLCDnumber实现电子表

from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
import sys

class MyWidget(QWidget):
    def __init__(self, parent = None):
        super().__init__(parent)
        self.setWindowTitle(self.tr(‘计时器‘))
        self.resize(640,480)
        self.id1 = self.startTimer(1000)
        self.id2 = self.startTimer(1500)
        self.id3 = self.startTimer(2200)

        self.timer = QTimer(self)
        self.timer.timeout.connect(self.updateTime)
        self.timer.start(1000)

        #self.label = QLabel(self)
        #self.label.resize(100,100)
        timefont = QFont()
        timefont.setFamily(self.tr(‘黑体‘))
        timefont.setBold(True)
        timefont.setPointSize(20)
        self.lcd = QLCDNumber(self)
        #self.lcd.setDigitCount(8)
        #self.label.clear()
        self.lcd.setFont(timefont)
        self.lcd.resize(100,100)
        self.lcd.move(200,200)

        #self.lcd1 = QLCDNumber(self)




    def timerEvent(self, event):
        if event.timerId() == self.id1:
            print(self.tr(‘第一个计时器时间到‘))
        elif event.timerId() == self.id2:
            print(self.tr(‘第二个计时器时间到‘))
        else:
            print(self.tr(‘第三个计时器时间到‘))
    def updateTime(self):
        currentTime = QTime.currentTime()
        if currentTime.second()%2 == 0:
            timeStr = currentTime.toString(‘hh:mm‘)
        else:
            timeStr = currentTime.toString(‘hh mm‘)
        self.lcd.display(timeStr)


if __name__ == ‘__main__‘:
    app = QApplication(sys.argv)
    widget = MyWidget()
    widget.show()
    print(widget.children())
    sys.exit(app.exec_())