作业7

文件方式实现完整的英文词频统计实例

 

1.读入待分析的字符串

2.分解提取单词 

3.计数字典

4.排除语法型词汇

5.排序

6.输出TOP(20)

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>>> fo=open('123.txt','w') >>> fo.write('''I messed up tonight, I lost another fight I still mess up but I'll just start again I keep falling down, I keep on hitting the ground I always get up now to see what's next Birds don't just fly, they fall down and get up Nobody learns without getting it won I won't give up, no I won't give in Til I reach the end, then I'll start again No I won't leave, I wanna try everything I wanna try even though I could fail I won't give up, no I won't give in Til I reach the end and then I'll start again No I won't leave, I wanna try everything I wanna try even though I could fail''') 574 >>> fo.close()

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fo=open('123.txt','r') song=fo.read()    song=song.lower() #小写 for i in ',.':     song=song.replace(i,' ')  #替换标点符号 words=song.split()  #分单词 #print(words)    dic={} #字典 keys=set(words) #集合 #print(keys)    for i in keys:     dic[i]=words.count(i) #出现单词的次数   #print(dic)    wc = list(dic.items()) #列表    wc.sort(key=lambdax:x[1],reverse=True) #print(wc)    for i in range(20):     print(wc[i]) fo.close()