save project

diy1.py

 import turtle
 pen=turtle.Pen()
-for i in range(1,300):
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","yellow","blue","green"]
+for i in range(1,500):
+    pen.color(colors[i%4])
     pen.fd(i)
-    pen.rt(1000)
+    pen.lt(550)
     pen.speed(i)
 turtle.hideturtle()
 turtle.done()
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