save project

diy1.py

 import turtle
 
 pen = turtle.Pen()
-
+screen=turtle.screen()
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
 for i in range(1,300):
     pen.forward(i)
-    pen.right(91)
-pen.hideturtle()
+    pen.pencolor(colors[i%4])
+     pen.right(91)
 turtle.done()
\ No newline at end of file