save project

diy1.py

@@ -13,8 +13,12 @@ colors=["white","blue","violet","cyan"]
 import turtle
 import turtle
 
 
 pen=turtle.Pen()
 pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["green","red","orange","yellow"]
 pen.speed(0)
 pen.speed(0)
 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)
 # 隐藏画笔，保存画布
 # 隐藏画笔，保存画布