auto save

diy3.py

-message = "诺依，周末一起去看动漫展吧！"
+import turtle
 
-# 请使用索引的知识，取出message所有元素（不用遍历的方式）yao'shiyaoshi
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+pen = turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+turtle.speed(100)
+color=["red","orange","green","yellow"]
+for i in range(300):
+    pen.pencolor(color[i%4])
+    pen.forward(i)
+    pen.right(91)
+    i=i+2
+pen.hideturtle()
+turtle.done()
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