save project

diy1.py

@@ -5,8 +5,13 @@
 import turtle
 
 pen = turtle.Pen()
+screen=turtle.screen()
+screen= bgcolor("black")
+
+colors=["red","orange","yellow","green"]
 # 请创造师在下面接着创作
 for i in range(300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.right(91)
 # 隐藏画笔，保存画布