save project

diy1.py

 import turtle
 a=turtle.Pen()
-a.pencolor('blue')
+c=turtle.Screen()
+c.bgcolor('black')
+a.speed(100)
+colors=['red','orange','yellow','blue']
 for b in range(300):
+    a.pencolor(colors[b%4])
     a.right(91)
     a.forward(b)
+a.hideturtle()
+turtle.done
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