save project

diy1.py

 import turtle
 import turtle
 #导入模块
 #导入模块
-
+color=["red","blue","pink","green"]
 #初始化变量
 #初始化变量
 pen=turtle.Pen()
 pen=turtle.Pen()
 pen.speed(500)
 pen.speed(500)
+screen=turtle.Screen()
+screen.bgcolor("black")
 #创建画笔
 #创建画笔
 for i in range(1,300):
 for i in range(1,300):
+    pen.color(color[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)    
     pen.right(91)    
 turtle.done()
 turtle.done()
\ No newline at end of file