织梦医院网站开发,怎么做网站弹幕,怎么制作链接,网站域名的安全性1、字典实例#xff1a;建立学生学号成绩字典#xff0c;做增删改查遍历操作。 建立#xff1a; d{0001:99,0003:89,0004:98,0005:100,0006:78} 增#xff1a;d[0002]79 删#xff1a;d.pop(0001) 改#xff1a;d[0004]100 查#xff1a;print(d[0002]) 遍历操作#x…1、字典实例建立学生学号成绩字典做增删改查遍历操作。 建立 d{0001:99,0003:89,0004:98,0005:100,0006:78} 增d[0002]79 删d.pop(0001) 改d[0004]100 查print(d[0002]) 遍历操作for i in d: print(d) 2、列表元组字典集合的遍历。 llist(12438849374837)for i in l: print(l) ttuple(nhaildhabvka)for i in t: print(t) d{0001:99,0003:89,0004:98,0005:100,0006:78}for i in d: print(d) sset(l)for i in s: print(s) 总结列表元组字典集合的联系与区别。 列表是一组有序序列能进行查询增加删除修改。是用中括号【】括起来的。 元组是一组有序序列能进行查询。是用小括号括起来的。 字典字典不是有序序列是由一组组键值对组成。能进行增删改查等操作。是用大括号{}括起来的。 集合集合也不是有序序列能进行查询等操作。是用大括号{}括起来的。 3、英文词频统计实例 1待分析字符串 binPut your make up on Get your nails done Curl your hair Run the extra mile Keep it slim so they like you, do they like you? Get your sexy on Dont be shy, girl Take it off This is what you want, to belong, so they like you Do you like you? You dont have to try so hard You dont have to, give it all away You just have to get up, get up, get up, get up You dont have to change a single thing You dont have to try, try, try, try You dont have to try, try, try, try You dont have to try, try, try, try You dont have to try Yooou dont have to try Oooh Oooh Get your shopping on, at the mall, max your credit card You dont have to choose, buy it all, so they like you Do they like you? Wait a second,Why, should you care, what they think of you When youre all alone, by yourself, do you like you? Do you like you?You dont have to try so hard You dont have to, give it all away You just have to get up, get up, get up, get up You dont have to change a single thing You dont have to try so hard You dont have to bend until you break You just have to get up, get up, get up, get up You dont have to change a single thing You dont have to try, try, try, try You dont have to try, try, try, try You dont have to try You dont have to try You dont have to try, try, try, try You dont have to try, try, try, try You dont have to try, try, try, try You dont have to tryYooou dont have to try NooooOooh You dont have to try so hard You dont have to, give it all away You just have to get up, get up, get up, get up You dont have to change a single thing You dont have to try, try, try, tryYou dont have to try, try, try, try You dont have to try, try, try, try You dont have to try Take your make up off Put your head down Take a breath Look into the mirror, at yourself. Dont you like you? Cause I like you! 2分解提取单词 大小写 txt.lower() binbin.lower() 分隔符.,:;?!-_’ for i in ,.?!\n: binbin.replace(i, ) 单词列表 binbin.split( ) 3单词计数字典 wordsset(bin)d{}d[star]bin.count(star)for a in words: d[a]bin.count(a)for a in d: print({0:11}{1}.format(a,d[a]))转载于:https://www.cnblogs.com/018linbin/p/7573294.html
