save project

diy1.py

@@ -4,8 +4,12 @@
 """
 import turtle
 pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+etfwy=["red","yellow","blue","green"]
 pen.speed(0)
-for i in range(1200):
+for i in range(1000):
     pen.forward(i)
+    pen.pencolor(etfwy[i%4])
     pen.left(91)
 turtle.done()
\ No newline at end of file