save project

diy1.py

@@ -6,7 +6,11 @@ import turtle
 
 pen = turtle.Pen()
 # 请创造师在下面接着创作
+screen = turtle.screen()
+screen.bgcolor("black")
+colour=["red","yellow","orange","green"]
 for i in range(1,301):
+pen.pencolor(colour[i%4])
     pen.forward(i)
     pen.right(91)
 # 隐藏画笔，保存画布