Python实现时钟显示效果思路详解

 from turtle import * from datetime import * def Skip(step): penup() forward(step) pendown() def mkHand(name, length): #注册Turtle形状，建立表针Turtle reset() Skip(-length*0.1) begin_poly() forward(length*1.1) end_poly() handForm = get_poly() #注册Turtle形状命令register_shape(name,shape=None) register_shape(name, handForm) def Init(): global secHand, minHand, hurHand, printer mode("logo")# 重置Turtle指向北 #建立三个表针Turtle并初始化 #第二个参数为长度 mkHand("secHand", 125) mkHand("minHand", 130) mkHand("hurHand", 90) secHand = Turtle() secHand.shape("secHand") minHand = Turtle() minHand.shape("minHand") hurHand = Turtle() hurHand.shape("hurHand") for hand in secHand, minHand, hurHand: hand.shapesize(1, 1, 3) hand.speed(0) #建立输出文字Turtle printer = Turtle() printer.hideturtle() printer.penup() def SetupClock(radius): #建立表的外框 reset() pensize(7) for i in range(60): Skip(radius) if i % 5 == 0: forward(20) Skip(-radius-20) else: dot(5) Skip(-radius) right(6) def Week(t): week = ["星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日"] return week[t.weekday()] def Date(t): y = t.year m = t.month d = t.day return "%s %d %d" % (y, m, d) def Tick(): #绘制表针的动态显示 #当前时间 t = datetime.today() second = t.second + t.microsecond*0.000001 minute = t.minute + second/60.0 hour = t.hour + minute/60.0 secHand.setheading(6*second) minHand.setheading(6*minute) hurHand.setheading(30*hour) #介入Tracer函数以控制刷新速度 tracer(False) printer.forward(65) printer.write(Week(t), align="center", font=("Courier", 14, "bold")) printer.back(130) printer.write(Date(t), align="center", font=("Courier", 14, "bold")) printer.home() tracer(True) ontimer(Tick, 100)#100ms后继续调用tick def main(): tracer(False) Init() SetupClock(160) tracer(True) Tick() mainloop() if __name__ == "__main__": main()

 import time,sys,os while(1): t = time.strftime('%H:%M:%S',time.localtime(time.time())) sys.stdout.write(t+'\b'*10) sys.stdout.flush() time.sleep(0.1) os.system('cls')