list是处理一组有序项目的数据结构，即你可以在一个列表中存储一个 序列 的项目

顾名思义，英语就是列表清单的意思。它是一个可变的数据类型。你可以对它进行操作，添加，搜索，删除。

对list 的简单操作。打印删除，追加。切片这个没说简易教程。看完这个去看廖雪峰的。

shoplist = ['apple','mango','carrot','banana']print ('i have',len(shoplist),'items to purchase')print ('these items are:')for item in shoplist:    print(item),print('\ni also have to buy rice.')shoplist.append('rice')print('my shopping list is now',shoplist)print('i will sort my list now')shoplist.sort()print('sorted shopping list is',shoplist)print('the first item i will buy is',shoplist[0])olditem = shoplist[0]del shoplist[0]print('i bougth the',olditem)print ('my shopping list is now',shoplist)

吃饭去了，吗的，还是茄子排骨