save project

123456.py

 import turtle
 import turtle
 pen=turtle.Pen()
 pen=turtle.Pen()
-pen.color("red")
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","yellow","green","blue"]
 pen.pensize(0.0001)
 pen.pensize(0.0001)
-pen.speed(100000)
-for i in range(1,500):
+pen.speed(10000000000000000000000000000000000000000000000000000000000000)
+for i in range(1,600):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)
 pen.hideturtle()
 pen.hideturtle()