save project

diy1.py

 
 import turtle
 pen = turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","blue","green","pink"]
 pen.speed(4567)
-for i in range(1,300):
+for i in range(1,600):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.right(91)
 pen.hideturtle()