save project

diy1.py

 import turtle as t 
-t.speed(100)
-for i in range(1,300):
+
+s=t.Screen()
+s.bgcolor("black")
+t.tracer(False)
+color=["red","blue","black","yellow"]
+for i in range(1,3001):
+    t.pencolor(color[i%4])
     t.forward(i)
     t.right(91)
 t.hideturtle()