save project

diy1.py

@@ -3,14 +3,17 @@
 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
-
+sc = turtle.Screen()
 pen = turtle.Pen()
-pen.pencolor()
 pen.pensize(1)
+color=["pink","red","blue","yellow"]
+sc.bgcolor("black")
 pen.hideturtle()
 # 请创造师在下面接着创作
 for i in range(1,1000):
+    pen.pencolor(color[i%4])
     pen.forward(i)
     pen.right(91)
 # 隐藏画笔，保存画布
+pen.pencolor()
 turtle.done()
\ No newline at end of file