9/20

1. 列表实例：由字符串创建一个作业评分列表，做增删改查询统计遍历操作。例如，查询第一个3分的下标，统计1分的同学有多少个，3分的同学有多少个等。

   score=list('112233345611')
   print('分数为：')
   print(score)
   score.sort()
   print('排列后：')
   print(score)
   print('计数1：')
   print(score.count('1'))
   print('计数3：')
   print(score.count('3'))
   score.pop(5)
   print(score)

   
2. 字典实例：建立学生学号成绩字典，做增删改查遍历操作。

   zd={"江雨斌":"90","张侦讯":"98","黄志涛":"77","梁浩燃":"88"}
   print(zd)
   zd['王文杰']='59'
   print(zd)

   

3. 列表，元组，字典，集合的遍历。
   总结列表，元组，字典，集合的联系与区别。

   lb=list('1223334444455555666666')
   yz=tuple('1223334444455555666666')
   jh=set('1223334444455555666666')
   zd={"jyb":"b6014","zzx":"b5008","hzt":"b6016"}
   print('列表遍历：')
   print(lb)
   for i in lb:
       print(i,end=' ')
   print('
   ')
   print('元组遍历：')
   for i in yz:
       print(i,end=' ')
   print('
   ')
   print('集合遍历：')
   for i in jh:
       print(i,end=' ')
   print('
   ')
   print('字典遍历：')
   for i in zd:
       print(i,end=' ')

   

4. 英文词频统计实例
   1. 待分析字符串
   2. 分解提取单词
      1. 大小写 txt.lower()
      2. 分隔符'.,:;?!-_’
   3. 计数字典
   4. 排序list.sort()
   5. 输出TOP(10)

      panama='''Daca nici asa nu-ti place
      Ia mai zboara-n Panama
      Zile zile zile zile eu alerg girl
      Mile mile mile mile pe maidan
      Pentru tine tine sa-ti dau un dar dar
      Cel mai de pret dar fara nici un ban ban
      Ganja iarba sunt inutile-tile
      Numai tu stii sa-mi dai aripile-pile
      In Jamaica sau in Chile Chile
      Inima face Boom-Boom numai pentru tine
      Eh eh eh eh eh eh eh eh eh eh
      Numai pentru tine
      Eh eh eh eh eh eh eh eh eh eh
      N-ai raspuns la telefon
      No problem te scot pe balcon
      Si-o sa vezi cu ochii tai
      Cum ti-aduc flori un camion
      Si iti cant asa cu chitara mea
      Daca nici asa nu-ti place
      Ia mai zboara-n Panama
      Ce pana mea
      Ah ah ah ah mai zboara-n Panama
      Ah ah ah ah zboara ce pana mea
      Ah ah ah ah mai zboara-n Panama
      Ah ah ah ah hai mai zboara
      Kile-kile kile-kile eu am dat jos
      Oricum baby nu erau de folos-los
      Mi-e dor de tine sunt intors pe dos-dos
      Acasa ajung la timp tre' sa o iau pe jos-jos
      La ce ne folosesc banii banii banii
      Daca tu imi dai iubire si zi de zi pun anii
      Ca Bonnie Clyde sa fiu doar eu cu tine
      Si o sa avem girl o iubire ca in filme
      Eh eh eh eh eh eh eh eh eh eh
      O iubire ca in filme
      Eh eh eh eh eh eh eh eh eh eh Eh
      N-ai raspuns la telefon
      No problem te scot pe balcon
      Si-o sa vezi cu ochii tai
      Cum ti-aduc flori un camion
      Si iti cant asa cu chitara mea
      Daca nici asa nu-ti place
      Ia mai zboara-n Panama Ce pana mea
      Ah ah ah ah mai zboara-n Panama
      Ah ah ah ah zboara ce pana mea
      Ah ah ah ah mai zboara-n Panama
      Ah ah ah ah Eh Oh no
      Baby girl hai vino incoa'
      Am dragoste la mine o dau la schimb cu a ta
      Baby girl dragostea mea
      E de calitate dau gramul gram hai ia
      N-ai raspuns la telefon
      No problem te scot pe balcon
      Si-o sa vezi cu ochii tai
      Cum ti-aduc flori un camion
      Si iti cant asa cu chitara mea
      Daca nici asa nu-ti place
      Ia mai zboara-n Panama Ce pana mea
      Ah ah ah ah mai zboara-n Panama
      Ah ah ah ah zboara ce pana mea
      Ah ah ah ah mai zboara-n Panama
      Ah ah ah ah hai ma zboara Pwaah'''
      panama=panama.replace('?',' ')
      panama=panama.replace('!',' ')
      panama=panama.replace(',',' ')
      panama=panama.replace('.',' ')
      panama=panama.replace('-',' ')
      panama=panama.replace('&',' ')
      panama=panama.lower()
      
      words=panama.split(' ')
      zd={}
      key=set(words)
      for i in key:
          zd[i]=words.count(i)
      lb=list(zd.items())
      lb.sort(key=lambda x:x[1],reverse=True)
      print('频率最高top10：
      ')
      for i in range(10):
          print(lb[i])