save project

diy1.py

@@ -4,7 +4,10 @@
 """
 import turtle
 pen = turtle.Pen()
+turtle.bgcolor("black")
+color=["orange","yellow","green","red"]
 for i in range(300):
+    pen.pencolor(color[i%4])
     pen.forward(i)
     pen.right(91)
 # 隐藏画笔，保存画布