save project

diy1.py

@@ -5,8 +5,12 @@
 import turtle
 
 pen = turtle.Pen()
+color=["red","yellow","blue","green"]
+screen=turtle.Screen()
+screen.bgcolor("black")
 # 请创造师在下面接着创作
-for i in range(0,300,3):
+for i in range(1,3000,3):
+    pen.pencolor(color[i%4])
     pen.forward(i)
     pen.right(89)
 # 隐藏画笔，保存画布