save project

3.py

 import turtle
 import turtle
 turtle.speed(0)
 turtle.speed(0)
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
 for x in range(1,30000):
 for x in range(1,30000):
     turtle.forward(x)
     turtle.forward(x)
     turtle.left(91)
     turtle.left(91)
-turtle.done()   
+    turtle.pencolor(colors[x%4])
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+turtle.done() 
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