save project

diy1.py

@@ -5,11 +5,9 @@
 import turtle
 
 pen = turtle.Pen()
-screen(black)
-sb=["green,red,orang,yellow"]
-pen.color(sb%4)
-distance=1
-for i in range(300):
+sb=["green","red","orange","yellow"]
+for i in range(1,300):
+    pen.color(sb[i%4])
     pen.forward(i)
     pen.right(91)
 # 隐藏画笔，保存画布