save project

hfsd.py

 import turtle
 import turtle
 
 
 pen=turtle.Pen()
 pen=turtle.Pen()
-
-d=1
-for i in range(500):
-    pen.forward(d)
-    pen.right(91)
-    d=d+1
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
+for i in range(1,500):
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
+    pen.right(91)  
 pen.hideturtle()
 pen.hideturtle()
 turtle.done()
 turtle.done()
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