save project

diy1.py

 """
 """
-使用turtle模块画图
+使用模块画图
 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
 
 
 pen=turtle.Pen()
 pen=turtle.Pen()
-pen.speed(1000)
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
+pen.speed(1000000000000000000000000000000000000000000000)
 for i in range(1,300):
 for i in range(1,300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)
 pen.hideturtle()
 pen.hideturtle()