save project

diy1.py

@@ -3,11 +3,11 @@
 每次移动都增加画笔移动的长度，并旋转91°，重复执行300次，查看效果
 """
 import turtle
-
-
+colors=["red","orange","yellow","green"]
 pen = turtle.Pen()
 for i in range(1,300):
     turtle.speed(0)
+    turtle.color(colors[i%4])
     turtle.forward(i)
     turtle.right(91)
 # 隐藏画笔，保存画布