save project

diy1.py

@@ -3,11 +3,13 @@
 每次移动都增加画笔移动的长度，并旋转91°，重复执行300次，查看效果
 """
 import turtle
-
+screen=turtle.screen()
 pen = turtle.Pen()
 # 请创造师在下面接着创作
-distance=1
+screen.bgcolor("black")
+colors("red","orange","yellow","green")
 for i in range(1,300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     i+=1
     pen.right(91)