save project

diy1.py

@@ -3,9 +3,16 @@
 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
+
 pen = turtle.Pen()
 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
 # 请创造师在下面接着创作
 for i in range(0,300,1):
 for i in range(0,300,1):
+    c = colors[i%4]
+    pen.pencolor(c)
     pen.forward(i)
     pen.forward(i)
     pen.right(91)
     pen.right(91)
 # 隐藏画笔，保存画布
 # 隐藏画笔，保存画布