auto save

diy1.py

 import turtle
 pen=turtle.Pen()
 pen.speed(100)
-colors=["red","orange","green","purple"]
 screen=turtle.Screen()
-screen=bgcolors("black")
-for i in range(1,300,1):
-    pen.pencolor(colors[i%4])
+screen.bgcolor("black")
+colours=["red","orange","green","purple"]
+for i in range(1,300):
+    pen.pencolor(colours[i%4])
     pen.forward(i)
     pen.right(91)
 pen.hideturtle()