save project

diy1.py

@@ -4,8 +4,12 @@
 """
 """
 import turtle
 import turtle
 
 
+screen=turtle.Screen()
+screen.bgcolor("blue")
 pen = turtle.Pen()
 pen = turtle.Pen()
-for i in range(1,320,20):
+colors=["red","orange","yellow","green"]
+for i in range(1,320):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作