save project

111.py

 import turtle
 import turtle
 
 
 pen=turtle.pen()
 pen=turtle.pen()
+screen=turtle.Screen()
+screen=bgcolor("black")
+colors=["green","red","blue","yellow"]
 distance=1
 distance=1
-for i in range(500)
-    pen.forward(distance)
+for i in range(1,500)
+    pen.pencoior(colors[1%4])
+    pen.forward(input())
     pen.right(91)
     pen.right(91)
-    distance+=1
 pen.hideturtle()
 pen.hideturtle()
 turtle.done()
 turtle.done()
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