1 import turtle
2 import time
3 def draw():
4 try:
5 screen = turtle.Screen()
6 screen.setup(700,700)
7 circle = turtle.Turtle()
8 circle.shape('circle')
9 circle.color('red')
10 circle.speed('fastest')
11 circle.up()
12 square = turtle.Turtle()
13 square.shape('square')
14 square.color('green')
15 square.speed('fastest')
16 square.up()
17 circle.goto(0,280)
18 circle.stamp()
19 k=0
20 for i in range(1,17):
21 y =30*i
22 for j in range(i - k):
23 x=30*j
24 square.goto(x, -y +280)
25 square.stamp()
26 square.goto(-x, -y +280)
27 square.stamp()
28 if i%4== 0:
29 x=30*(j+1)
30 circle.color('red')
31 circle.goto(-x, -y +280)
32 circle.stamp()
33 circle.goto(x,-y +280)
34 circle.stamp()
35 k+=3
36 if i% 4 == 3:
37 x =30*(j+1)
38 circle.color('yellow')
39 circle.goto(-x, -y +280)
40 circle.stamp()
41 circle.goto(x,-y +280)
42 circle. stamp()
43 square.color('brown')
44 for i in range(17,20):
45 y =30*i
46 for j in range(2):
47 x=30*j
48 square.goto(x,-y+280)
49 square. stamp()
50 square.goto(-x, -y +280)
51 square.stamp()
52 y=[30*i for i in [0,4,8,12,16]]
53 x1=[30*i for i in [0,3,4,5,6]]
54 x2=[30*i for i in [0,4,5,6,7]]
55 c=1
56 # yellow=[[60,90],[90,210],[120,330],[150,450]]
57 # red=[[120,120],[150,240],[180,360],[210,480]]
58 while(True):
59 if 1==c:
60 for i in range(5):
61 if not i == 0:
62 circle.color('red')
63 circle.goto(-x1[i], -y[i] + 310)
64 circle.stamp()
65 circle.goto(x1[i], -y[i] + 310)
66 circle.stamp()
67 circle.color('yellow')
68 circle.goto(-x2[i], -y[i] + 280)
69 circle.stamp()
70 circle.goto(x2[i], -y[i] + 280)
71 circle.stamp()
72 else:
73 for i in range(5):
74 if not i == 0:
75 circle.color('yellow')
76 circle.goto(-x1[i], -y[i] + 310)
77 circle.stamp()
78 circle.goto(x1[i], -y[i] + 310)
79 circle.stamp()
80 circle.color('red')
81 circle.goto(-x2[i], -y[i] + 280)
82 circle.stamp()
83 circle.goto(x2[i], -y[i] + 280)
84 circle.stamp()
85
86 c=c*-1
87 except:
88 exit()
89
90
91 def christmas_tree():
92 draw()
93 if __name__ == '__main__':
94 christmas_tree()
