save project

diy1.py

@@ -7,7 +7,11 @@ import turtle
 pen = turtle.Pen()
 pen = turtle.Pen()
 pen.speed(10)
 pen.speed(10)
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
+screen=turtle.Screen()
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
 for i in range(300):
 for i in range(300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)