save project

diy1.py

 import turtle
 import turtle
 turtle.speed(0)
 turtle.speed(0)
+turtle.bgcolor("black")
+c=["blue","purple","red","yellow"]
 for i in range(700):
 for i in range(700):
+    turtle.pencolor(c[i%4])
     turtle.forward(i)
     turtle.forward(i)
     i+=1
     i+=1
     turtle.right(91)
     turtle.right(91)