auto save

diy1.py

-import turtle
-pen=turtle.Pen()
-screen=turtle.Screen()
-screen.bgcolor("black")
-pen.speed(50)
-pen.color("blue")
-a=["red","green","blue","yellow"]
-for i in range(1,300):
-    pen.color(a[i%4])
-    pen.forward(i)
-    pen.left(91)  
-turtle.done()
-pen.hideturtle()
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