auto save

diy1.py

@@ -3,13 +3,15 @@
 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
+import random
 pen=turtle.Pen()
-distance=1
+turtle.bgcolor("black")
+colors=["red","yellow","green","blue"]
 for i in range(300):
     pen.speed(0)
-    pen.forward(distance)
-    pen.left(123456789)
-    distance+=1
-
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
+    pen.left(91)
+    
 turtle.done()