python编程-17：turtle绘制时钟程序

源码：

1. from turtle import *
2. from datetime import *
3.  
4. def Skip(step):
5.     penup()
6.     forward(step)
7.     pendown()
8.  
9. def mkHand(name, length):
10.     #注册Turtle形状，建立表针Turtle
11.     reset()
12.     Skip(-length*0.1)
13.     begin_poly()
14.     forward(length*1.1)
15.     end_poly()
16.     handForm = get_poly()
17.     register_shape(name, handForm)
18.  
19. def Init():
20.     global secHand, minHand, hurHand, printer
21.     mode("logo")# 重置Turtle指向北
22.     #建立三个表针Turtle并初始化
23.     mkHand("secHand", 125)
24.     mkHand("minHand",  130)
25.     mkHand("hurHand", 90)
26.     secHand = Turtle()
27.     secHand.shape("secHand")
28.     minHand = Turtle()
29.     minHand.shape("minHand")
30.     hurHand = Turtle()
31.     hurHand.shape("hurHand")
32.     for hand in secHand, minHand, hurHand:
33.         hand.shapesize(1, 1, 3)
34.         hand.speed(0)
35.     #建立输出文字Turtle
36.     printer = Turtle()
37.     printer.hideturtle()
38.     printer.penup()
39.      
40. def SetupClock(radius):
41.     #建立表的外框
42.     reset()
43.     pensize(7)
44.     for i in range(60):
45.         Skip(radius)
46.         if i % 5 == 0:
47.             forward(20)
48.             Skip(-radius-20)
49.         else:
50.             dot(5)
51.             Skip(-radius)
52.         right(6)
53.          
54. def Week(t):    
55.     week = ["星期一", "星期二", "星期三",
56.             "星期四", "星期五", "星期六", "星期日"]
57.     return week[t.weekday()]
58.  
59. def Date(t):
60.     y = t.year
61.     m = t.month
62.     d = t.day
63.     return "%s %d %d" % (y, m, d)
64.  
65. def Tick():
66.     #绘制表针的动态显示
67.     t = datetime.today()
68.     second = t.second + t.microsecond*0.000001
69.     minute = t.minute + second/60.0
70.     hour = t.hour + minute/60.0
71.     secHand.setheading(6*second)
72.     minHand.setheading(6*minute)
73.     hurHand.setheading(30*hour)
74.      
75.     tracer(False)  
76.     printer.forward(65)
77.     printer.write(Week(t), align="center",
78.                   font=("Courier", 14, "bold"))
79.     printer.back(130)
80.     printer.write(Date(t), align="center",
81.                   font=("Courier", 14, "bold"))
82.     printer.home()
83.     tracer(True)
84.  
85.     ontimer(Tick, 100)#100ms后继续调用tick
86.  
87. def main():
88.     tracer(False)
89.     Init()
90.     SetupClock(160)
91.     tracer(True)
92.     Tick()
93.     mainloop()
94.  
95. if __name__ == "__main__":       
96.     main()

原文链接： http://www.icourse163.org/learn/BIT-268001?tid=1002001005#/learn/content?type=detail&id=1002613054&cid=1002856163