save project

diy1.py

@@ -5,8 +5,11 @@
 import turtle
 
 pen = turtle.Pen()
-
+screen = turtle.Screen()
+color = ["red","orange","yellow","green"]
+screen.bgcolor("black")
 for i in range(1,30000):
+    pen.pencolor(color[1&4])
     pen.speed()
     pen.right(91)
     pen.forward(i)