save project

diy1.py

@@ -7,10 +7,13 @@ import turtle
 
 pen = turtle.Pen()
 screen = turtle.Screen()
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
 # 请创造师在下面接着创作
 
 pen.speed(10000)
 for i in range(1,300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.right(91)
 # 隐藏画笔，保存画布