save project

diy1.py

@@ -5,13 +5,14 @@
 import turtle
 
 pen = turtle.Pen()
+screen = turtle.Screen()
+screen.bgcolor("black")
+colors=["red","orange","yellow","green"]
 # 请创造师在下面接着创作
-for i in range(300):
+for i in range(1,300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
-    i+=1
     pen.right(91)
-colors=["red","orange","yellow","green"]
-pen.pencolor(colors[i%4])
 # 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()
\ No newline at end of file