save project

1.py

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