auto save

jjj1.py

 import turtle
 import turtle
 pen=turtle.Pen()
 pen=turtle.Pen()
+=screen.bgcolor("black")
+xxx=["green","red","orange","yellow"]
 #hhh=1
 #hhh=1
-for i in range(500):
+for i in range(1,500):
+    pen.pencolor(xxx[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91) 
     pen.right(91) 
 turtle.done()
 turtle.done()
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