save project

diy1.py

@@ -3,18 +3,15 @@
 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
+screen=turtle.Screen()
+screen.bgcolor("red")
 
 pen = turtle.Pen()
 # 请创造师在下面接着创作
+colors=["red","black","pink","blue"]
 for i in range(1,300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.right(91)
-    
-
-
-
-
-
-# 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()
\ No newline at end of file