auto save

p.py

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