save project

diy1.py

@@ -5,6 +5,8 @@
 import turtle
 pen = turtle.Pen()
 # 请创造师在下面接着创作
+screen=turtle.screen()
+screen.bgcolors("black")
 colors=["red","orange","yellow","green"]
 for i in range(1,300):
     pen.pencolor(colors[i%4])