作业三
练习：
总结列表，元组，字典，集合的联系与区别。
列表，元组，字典，集合的遍历
#列表,元祖,字典,集合的遍历 #列表 list1 = [1,2,3,4,5] for i in list1: print() #y元祖 tuple = (10,23,65) for i in tuple: print(i) #=集合 set = {85,56,55,33,48,65} for i in set: print(i) #字典
dict = {'金融':'1班','软件工程':'2班','信管':'3班'}
for i in dict:
print(i,dict[i])
结果如下：
英文词频统计：
- 下载一首英文的歌词或文章str
str = '''Hey Havana ooh na na Ayy Half of my heart is in Havana ooh na na Ayy ayy He took me back to East Atlanta na na na All of my heart is in Havana Ayy There's somethin' 'bout his manners Uh huh Havana ooh na na He didn't walk up with that how you doin' When he came in the room He said there's a lot of girls I can do with But I can't without you I'm doin' forever in a minute That summer night in June And papa says he got malo in him He got me feelin' like Oooh oooh ooh I knew it when I met him I loved him when I left him Got me feelin' like Oooh oooh ooh and then I had to tell him I had to go oh na na na na na Havana ooh na na Ayy Half of my heart is in Havana ooh na na Ayy ayy He took me back to East Atlanta na na na All of my heart is in Havana Ayy My heart is in Havana Havana ooh na na Jeffery Just graduated fresh on campus mmm Fresh out East Atlanta with no manners damn Fresh out East Atlanta Bump on her bumper like a traffic jam Jam Hey I was quick to pay that girl like uncle Sam Here you go ayy Back it on me shawty cravin' on me Get to diggin' on me On me She waited on me Then what Shawty cakin' on me got the bacon on me Wait up This is history in the makin' on me On me Point blank close range that be If it cost a million that's me That's me I was gettin' mula man they feel me Havana ooh na na Ayy ayy Half of my heart is in Havana ooh na na Oh ayy ayy He took me back to East Atlanta na na na Oh no All of my heart is in Havana Ayy My heart is in Havana Ayy Havana ooh na na Ooh na na oh na na na Take me back back back like Ooh na na oh na na na Take me back back back like Ooh na na oh na na na Take me back back back like Ooh na na oh na na na Take me back back back Yeah ayy Oooh oooh ooh Oooh oooh ooh Take me back to my Havana Havana ooh na na Half of my heart is in Havana ooh na na Oh yeah He took me back to East Atlanta na na na All of my heart is in Havana My heart is in Havana Ayy Havana ooh na na Uh huh Oh na na na Oh na na na Hey Oh na na na No no no take me back Oh na na na''' strCount = str.count('na') print(strCount) s1 = str.startswith('Hey') print('是否以start开头') print(s1) s2 = str.endswith('na') print('是否以na结尾：') print(s2) s3 = str.isspace() print('是否为空') print(s3) s4 = str.isalnum() print('是否全为字母或数字：') print(s4) s5 = str.isalpha('') print('是否全字母：') print(s5) s6 = str.isdigit() print('是否全为数字') print(s6) s7 = str.islower() print('是否全为小写') print(s7) s8 = str.isupper() print(s8)
结果如下
-
：
- 分隔出一个一个的单词 list
#str每个单词分割组成列表形式 str = ''''hanvana''' str = str.split() print(str)
- 结果
-
#计算单词出现的次数
strList = ('adigugyqiegyiuagiwgre')
print("计算单词出现的次数:")
strSet=set(strList)
for word in strSet:
print(word,strList.count(word))结果如下：
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