源码：
1 import turtle #导入turtle库，turtle库是python的基础绘图库
2
3 turtle.pensize(30) #设置画笔粗细
4 for i in range(30):
5 turtle.circle(i*10,60) #循环画圆30次，每次画60度并且半径增加10，也就是说画了30×60度的圆形，1800度，即5圈
6 turtle.done() #画完之后，使面板停留，否则画笔画完将自动关闭
效果图：
源码：
1 # -*- coding:utf-8 –*-
2 # 用turtlr画时钟
3 # 以自定义shape的方式实现
4 import turtle as t
5 import datetime as d
6 def skip(step): # 抬笔，跳到一个地方
7 t.penup()
8 t.forward(step)
9 t.pendown()
10 def drawClock(radius): # 画表盘
11 t.speed(0)
12 t.mode("logo") # 以Logo坐标、角度方式
13 t.hideturtle()
14 t.pensize(7)
15 t.home() # 回到圆点
16 for j in range(60):
17 skip(radius)
18 if (j % 5 == 0):
19 t.forward(20)
20 skip(-radius - 20)
21 else:
22 t.dot(5)
23 skip(-radius)
24 t.right(6)
25 def makePoint(pointName, len): # 钟的指针，时针、分针、秒针
26 t.penup()
27 t.home()
28 t.begin_poly()
29 t.back(0.1 * len)
30 t.forward(len * 1.1)
31 t.end_poly()
32 poly = t.get_poly()
33 t.register_shape(pointName, poly) # 注册为一个shape
34 def drawPoint(): # 画指针
35 global hourPoint, minPoint, secPoint, fontWriter
36 makePoint("hourPoint", 100)
37 makePoint("minPoint", 120)
38 makePoint("secPoint", 140)
39 hourPoint = t.Pen() # 每个指针是一只新turtle
40 hourPoint.shape("hourPoint")
41 hourPoint.shapesize(1, 1, 6)
42 minPoint = t.Pen()
43 minPoint.shape("minPoint")
44 minPoint.shapesize(1, 1, 4)
45 secPoint = t.Pen()
46 secPoint.shape("secPoint")
47 secPoint.pencolor('red')
48 fontWriter = t.Pen()
49 fontWriter.pencolor('gray')
50 fontWriter.hideturtle()
51 def getWeekName(weekday):
52 weekName = ['星期一', '星期二', '星期三', '星期四', '星期五', '星期六', '星期日']
53 return weekName[weekday]
54 def getDate(year, month, day):
55 return "%s-%s-%s" % (year, month, day)
56 def realTime():
57 curr = d.datetime.now()
58 curr_year = curr.year
59 curr_month = curr.month
60 curr_day = curr.day
61 curr_hour = curr.hour
62 curr_minute = curr.minute
63 curr_second = curr.second
64 curr_weekday = curr.weekday()
65 t.tracer(False)
66 secPoint.setheading(360 / 60 * curr_second)
67 minPoint.setheading(360 / 60 * curr_minute)
68 hourPoint.setheading(360 / 12 * curr_hour + 30 / 60 * curr_minute)
69 fontWriter.clear()
70 fontWriter.home()
71 fontWriter.penup()
72 fontWriter.forward(80)
73 # 用turtle写文字
74 fontWriter.write(getWeekName(curr_weekday), align="center", font=("Courier", 14, "bold"))
75 fontWriter.forward(-160)
76 fontWriter.write(getDate(curr_year, curr_month, curr_day), align="center", font=("Courier", 14, "bold"))
77 t.tracer(True)
78 print(curr_second)
79 t.ontimer(realTime, 100) # 每隔100毫秒调用一次realTime()
80 def main():
81 t.tracer(False)
82 drawClock(160)
83 drawPoint()
84 realTime()
85 t.tracer(True)
86 t.mainloop()
87 if __name__ == '__main__':
88 main()
效果图：
源码：
1 import turtle as t
2 import datetime
3 def drawGap(): #绘制数码管间隔
4 t.penup()
5 t.fd(5)
6 def drawLine(draw): #绘制单段数码管
7 drawGap()
8 t.pendown() if draw else t.penup()
9 t.fd(40)
10 drawGap()
11 t.right(90)
12 def drawDigit(d): #根据数字绘制七段数码管
13 drawLine(True) if d in [2,3,4,5,6,8,9] else drawLine(False)
14 drawLine(True) if d in [0,1,3,4,5,6,7,8,9] else drawLine(False)
15 drawLine(True) if d in [0,2,3,5,6,8,9] else drawLine(False)
16 drawLine(True) if d in [0,2,6,8] else drawLine(False)
17 t.left(90)
18 drawLine(True) if d in [0,4,5,6,8,9] else drawLine(False)
19 drawLine(True) if d in [0,2,3,5,6,7,8,9] else drawLine(False)
20 drawLine(True) if d in [0,1,2,3,4,7,8,9] else drawLine(False)
21 t.left(180)
22 t.penup()
23 t.fd(20)
24 def drawDate(date):
25 t.pencolor("red")
26 for i in date:
27 if i == '-':
28 t.write('年', font=("Arial", 18, "normal"))
29 t.pencolor("green")
30 t.fd(40)
31 elif i == '=':
32 t.write('月', font=("Arial", 18, "normal"))
33 t.pencolor("blue")
34 t.fd(40)
35 elif i == '+':
36 t.write('日', font=("Arial", 18, "normal"))
37 else:
38 drawDigit(eval(i))
39 def main():
40 t.setup(800, 350, 200, 200)
41 t.penup()
42 t.fd(-350)
43 t.pensize(5)
44 drawDate(datetime.datetime.now().strftime('%Y-%m=%d+'))
45 t.hideturtle()
46 t.exitonclick()
47 main()
效果图：
