save project

diy1.py

@@ -3,15 +3,15 @@
 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
 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
 import turtle
-
+screen=turtle.Screen()
+screen.bgcolor("black")
 pen = turtle.Pen()
 pen = turtle.Pen()
 pen.speed(0)
 pen.speed(0)
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
-
-
+color=["red","orange","yellow","green"]
 for i in range(300):
 for i in range(300):
-    pen.forward(i+1)
-    
+    pen.pencolor(color[i%4])
+    pen.forward(i+1) 
     pen.right(91)
     pen.right(91)
 # 隐藏画笔，保存画布
 # 隐藏画笔，保存画布
 pen.hideturtle()
 pen.hideturtle()