save project

diy.py/bg.py

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