save project

z.py

 import turtle
 pen=turtle.Pen()
-distance=20
-for i in range(200):
-    pen.forward(distance)
-    pen.right(200)
-    distance+=20
+screen=tutle.Screen()
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
+for i in range(1,300):
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
+    pen.right(91)
 pen.hideturtie()
 turtle.done()