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()
+screen.bgcolor("black")
 # 请创造师在下面接着创作
-distance=1
+color=["green","red","orange","yellow"]
 for i in range(1,300):
+    pen.color(color[i%4])
     pen.forward(i)
     pen.right(91)
 pen.hideturtle()