报障系统之多级评论前戏

 一、

前戏：

1. 列表添加：

   v1 = [1,2,3,4]
   v1.append(123)
   print(v1)
   
   
   data = [
       [11,22,33],
       [44,55,66]
   ]
   
   data[0].append(data[1])
   print(data)
   # data = [
   #     [11,22,33, [44,55,66]],
   #     [44,55,66]
   # ]
   data[1].append(77)
   print(data)
   # data = [
   #     [11,22,33, [44,55,66,77]],
   #     [44,55,66,77]
   # ]
   print(data[0][3])
   #[44, 55, 66, 77]

   列表添加元素练习