很意外,我的博客居然有人访问,还有一位仁兄来评价,点赞,莫名感激
一 list
name = ["aaa","bbb","ccc","ddd","eee","fff","ggg","hhh","... = [1,2,3,4,5,6,7,8,9,10,10,9,8,7,6,5,4,3,2,1,2,4,7,9,3,4,6,7,9]
for i in range(list.count(9)):
list...(dict) 将字典转为list
product = list(shop_list)[int(user_choise)]
和list比较,dict有以下几个特点:
查找和插入的速度极快...而list相反:
查找和插入的时间随着元素的增加而增加;
占用空间小,浪费内存很少。...)
将元组转为列表list(ls)