save project

diy1.py

@@ -3,9 +3,11 @@
 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
 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 turtle
+w=["red","yellow","blue","green"]
 
 
 pen=turtle.Pen()
 pen=turtle.Pen()
 for i in range(300):
 for i in range(300):
+    pen.pencolor(w[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)
 turtle.done()
 turtle.done()