auto save

diy1.py

@@ -15,6 +15,7 @@ pen.speed(1000)
 for i in range(1,300):
     pen.pencolor(colors[i%4])
     pen.forward(i)
+    i += 1
     pen.right(91)
 # 隐藏画笔，保存画布
 pen.hideturtle()