save project

123.py/2.py

 import turtle
 import turtle
 a=turtle.Pen()
 a=turtle.Pen()
 a.speed(100)
 a.speed(100)
+c=turtle.Screen()
+c.bgcolor("black")
+b=["green","red","orange","blue"]
 for i in range(1,900):
 for i in range(1,900):
+    a.pencolor(b[i%4])
     a.forward(i)
     a.forward(i)
     a.right(89)
     a.right(89)
 a.hideturtle()
 a.hideturtle()