python实现屏保计时器的示例代码

import turtle, timedef drawGap():  turtle.penup()  turtle.fd(5)def drawLine(draw):  drawGap()  turtle.pendown() if draw else turtle.penup()  turtle.fd(40)  drawGap()  turtle.right(90)def drawDigit(d):  drawLine(True) if d in [2,3,4,5,6,8,9] else drawLine(False) #g  drawLine(True) if d in [0,1, 3, 4, 5, 6,7, 8, 9] else drawLine(False) #c  drawLine(True) if d in [0, 2, 3, 5, 6, 8, 9] else drawLine(False) #d  drawLine(True) if d in [0,2,6,8] else drawLine(False) #e  turtle.left(90) #经历一次右转后，调整左转，方向竖直向上  drawLine(True) if d in [0,4,5,6,8,9] else drawLine(False)   drawLine(True) if d in [0,2,3,5,6,7,8,9] else drawLine(False)  drawLine(True) if d in [0,1,2,3,4,7,8,9] else drawLine(False)  turtle.left(180)  turtle.penup()  turtle.fd(20)def drawDate(date):  turtle.pencolor('red')  for i in date:    if i == '-':      turtle.write('时',font=('Arial',18,'normal'))      turtle.pencolor('green')      turtle.fd(40)    elif i == '=':      turtle.write('分', font=('Arial', 18, 'normal'))      turtle.pencolor('blue')      turtle.fd(40)    elif i == '+':      turtle.write('秒', font=('Arial', 18, 'normal'))      turtle.pencolor('yellow')    else:      drawDigit(eval(i))def init():  turtle.setup(1920,1080,0,0) #设置画布大小 200 200 为屏幕位置  turtle.speed(10)  turtle.penup()   turtle.goto(0,0)  turtle.fd(-350)  turtle.pensize(5)def main():  while True:    turtle.clear()    init()    time_string = time.strftime("%H-%M=%S+", time.localtime())    turtle.getscreen().tracer(30,0)    drawDate(time_string) #格式化时间 2017-05=02+ 控制输入年日月    time.sleep(1)    turtle.hideturtle()main()