auto save

diy1.py

@@ -6,9 +6,10 @@ import turtle
 
 
 pen = turtle.Pen()
-
+screen=turtle.Screen()
+screen.bgcolor("black")
 colors=["red","orange","yellow","green"]
-for i in range(1,300):
+for i in range(1,1000000000):
     pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.right(91)