save project

diy1.py

@@ -3,11 +3,13 @@
 每次移动都增加画笔移动的长度，并旋转91°，重复执行300次，查看效果
 """
 import turtle
-
+screen=turtle.Screen()
 pen = turtle.Pen()
 # 请创造师在下面接着创作
-
+screen.bgcolor("black")
+colors = ['yellow'] #'blue', 'green','silver',"orange",'red' 
 for i in range(1,9999999999999999999999999999999999999999999999):
+    pen.pencolor(colors[i%1])
     pen.forward(i)
     
     pen.right(91)