Python编程使用PyQt5制作动态钟表示例

 def paintEvent(self, event):
        hour_points = [QPoint(5,8),QPoint(-5,8),QPoint(0,-30)]
        minute_points = [QPoint(5,8),QPoint(-5,8),QPoint(0,-65)]
        second_points = [QPoint(5,8),QPoint(-5,8),QPoint(0,-80)]
        hour_color = QColor(200,100,0,200)
        minute_color = QColor(0,127,127,150)
        second_color = QColor(0,160,230,150)
        min_len = min(self.width(),self.height())
        time = QTime.currentTime() #获取当前时间
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        painter.translate(self.width()/2,self.height()/2)#平移到窗口中心
        painter.scale(min_len/200.0,min_len/200.0) #进行尺度缩放
        #----------绘制时针------------
        painter.setPen(Qt.NoPen)
        painter.setBrush(hour_color)#颜色
        painter.save()
        # 根据 1小时时= 30°，水品方向逆时针旋转时针
        painter.rotate(30.0*((time.hour()+time.minute()/60.0)))
        painter.drawConvexPolygon(QPolygon(hour_points))
        painter.restore() # save 退出，可重新设置画笔
        painter.setPen(hour_color)
        #绘制小时线(360/12 = 30度)
        for i in range(12):
            painter.drawLine(88,0,96,0)#绘制水平线
            painter.rotate(30.0)# 原有旋转角度上进行旋转；
        radius = 100 # 半径
        font = painter.font()
        font.setBold(True)
        painter.setFont(font)
        pointSize = font.pointSize()#字体大小
        # print(pointSize)
        #绘制小时文本
        for i in range(12):
            nhour = i + 3 # 从水平 3 点进行绘制
            if(nhour>12):
                nhour -= 12
            painter.drawText(self.textRectF(radius*0.8,pointSize,i*30),Qt.AlignCenter,str(nhour))

        #绘制分针;
        painter.setPen(Qt.NoPen)
        painter.setBrush(minute_color)
        painter.save()

        # 1分钟为6°，
        painter.rotate(6.0*(time.minute()+time.second()/60.0))
        painter.drawConvexPolygon(QPolygon(minute_points))
        painter.restore()

        #绘制分针线
        painter.setPen(minute_color)
        for i in range(60):
            if(i%5 !=0):
                painter.drawLine(92,0,96,0)
            painter.rotate(6.0)
        #绘制秒针
        painter.setPen(Qt.NoPen)
        painter.setBrush(second_color)
        painter.save()
        #绘制秒线
        painter.rotate(6.0*time.second())
        painter.drawConvexPolygon(QPolygon(second_points))
        painter.restore()
        painter.setPen(second_color)
        for i in range(360):
            if(i%5!=0 or i%30!=0):#绘制
                painter.drawLine(94,0,96,0)
            painter.rotate(1.0)#旋转

        self.timer = QTimer()  # 定时器
        self.timer.timeout.connect(self.update)
        self.timer.start(1000)  # 每1s 更新一次

self.lcdNumber = QtWidgets.QLCDNumber(Form)
        self.lcdNumber.setGeometry(QtCore.QRect(0, 0, 250, 50))
        self.lcdNumber.setContextMenuPolicy(QtCore.Qt.DefaultContextMenu)
        self.lcdNumber.setFrameShape(QtWidgets.QFrame.NoFrame)
        self.lcdNumber.setSmallDecimalPoint(False)
        self.lcdNumber.setDigitCount(8)
        self.lcdNumber.setSegmentStyle(QtWidgets.QLCDNumber.Flat)
        self.lcdNumber.setProperty("value", 2021.0)
        self.lcdNumber.setObjectName("lcdNumber")

 		self.lcdNumber.display('00:00:00')
        time_slot =QTimer(self)
        # time_slot.setInterval(1000)
        # time_slot.start()
        time_slot.timeout.connect(self.event_1)
        time_slot.start(1000)
    def event_1(self):
        time_format = QTime.currentTime()
        time_format = time_format.toString("hh:mm:ss")
        self.lcdNumber.display(time_format)
        QApplication.processEvents()

  		self.label1 = Clock_paint()
        self.label2 = MyWidget()
        self.horizon_layout = QHBoxLayout()
        self.horizon_layout.addWidget(self.label1)
        self.horizon_layout.addWidget(self.label2)
        self.setLayout(self.horizon_layout)
        self.setWindowTitle('时钟--《公号:小张Python》')
        self.setWindowIcon(QIcon('clock.jpg'))