save project

diy1.py

@@ -2,10 +2,10 @@ import turtle
 pen=turtle.Pen()
 screen=turtle
 screen.bgcolor("black")
-color=["green","red","orange","yellow"]
+colors=["green","red","orange","yellow"]
 for i in range(1,300):
     pen.pencolor(colors[i%4])
-    pen.forward(SB)
+    pen.forward(i)
     
     pen.right(91)
 pen.hideturtle()