语言：Python

IDE：Python.IDE

一、编写时钟程序，要求根据时间动态更新

代码思路【关注后私信小编 PDF领取十套电子文档书籍】

• 需求：5个Turtle对象， 1个绘制外表盘+3个模拟表上针+1个输出文字
• Step1：建立Turtle对象并初始化
• Step2：静态表盘绘制
• Step3：根据时钟更新表针位置与时间信息

基本库：Turtle、datetime

效果图

代码也很简单

from turtle import *
from datetime import *
import time,sys,os
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 = ["Python学习群：516107834", "Python学习群：516107834", "Python学习群：516107834",
 "Python学习群：516107834", "Python学习群：516107834", "Python学习群：516107834", "Python学习群：516107834"]
 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()