save project

diy1.py

@@ -5,12 +5,13 @@
 import turtle
 
 pen = turtle.Pen()
-# 请创造师在下面接着创作
-
+screen=turtle.Screen()# 请创造师在下面接着创作
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
 for i in range(1,1000000000000000000000000000000000000000000000000000000000000):
     pen.forward(i)
-    
-    pen.right(181)
+    pen.pencolor(colors[i%4])
+    pen.right(140)
 # 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()
\ No newline at end of file