save project

diy1.py

@@ -8,8 +8,10 @@ import turtle
 pen = turtle.Pen()
 pen = turtle.Pen()
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
 colors=["red","yellow","green","orange"]
 colors=["red","yellow","green","orange"]
+s = turtle.Screen()
+s.bgcolor("black")
 for i in range(1,300):
 for i in range(1,300):
-    pen.pencolor(colors[1%4])
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     
     
     pen.right(91)
     pen.right(91)