1 import turtle
 2 
 3 def draw_square(t,a,c):
 4     t.color(c)
 5     t.pencolor("black")
 6     t.begin_fill()
 7     for i in range(4):
 8         t.forward(a)
 9         t.left(90)
10     t.end_fill()
11 
12 
13 def locate(t):
14     t.up()
15     t.fd(10)
16     t.left(90)
17     t.fd(10)
18     t.right(90)
19     t.down()
20 
21 
22 turtle.setup(500,500,200,200)
23 t=turtle.Pen() #这个Pen 第一个字母要大写。
24 t.up()
25 t.fd(-150)
26 t.right(90)
27 t.fd(150)
28 t.left(90)
29 t.down()
30 a=300
31 t.pensize(5)
32 
33 for i in range(5):
34     draw_square(t,a,"red")
35     a=a-20
36     locate(t)
37     draw_square(t,a,"yellow")
38     a=a-20
39     locate(t)
40     draw_square(t,a,"blue")
41     a=a-20
42     locate(t)

效果如下：