save project

diy1.py

@@ -6,7 +6,11 @@ import turtle
 
 
 pen = turtle.Pen()
 pen = turtle.Pen()
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
+screen=turtle
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
 for i in range(1,3401):
 for i in range(1,3401):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)