save project

diy1.py

 import turtle
 pen=turtle.Pen()
+screen=turtle.Screen()
+colors=["red","green","orange","blue"]
 for i in range(1,600):
+    screen.bgcolor("black")
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.right(91)
 turtle.done()
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