auto save

diy2.py

+import turtle
+pen = turtle.Pen()
+screen = turtle.Screen()
+screen.bgcolor("black")
+colors=["white","blue","violet","cyan"]
+distance=1
+pen.speed(10000)
+for i in range(500):
+    pen.pencolor(colors[i%4])
+    pen.forward(distance)
+    pen.right(91)
+    distance+=1
+pen.hideturtle()
+turtle.done()
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