save project

diy1.py

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