save project

diy1.py

@@ -3,9 +3,12 @@
 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
 """
 from turtle import *
+bgcolor("black")
+color=["red","yellow","orange","blue"]
 a = 1
-speed(-100000000000000000000000000000)
-for i in range(600):
+speed(0)
+for i in range(1000):
+    pencolor(color[i%4])
     fd(a)
     a += 1
     left(91)