auto save

diy1.py

 import turtle
 import turtle
 
 
 pen=turtle.Pen()
 pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
 pen.speed(200)
 pen.speed(200)
 for i in range(300): 
 for i in range(300): 
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)
 pen.hideturtle()
 pen.hideturtle()