Python 程序查找 .txt 文件中最常见的单词

Question

我是Python新手我有一个文本文件我希望程序做的是找到20个最常用的单词并显示它们重复了多少次(您可以使用Python的内置函数和库。不要使用不同的库。)接下来我应该做什么？

我只能做这部分

FILE_NAME = 'file.txt'

wordCounter = {}

with open(FILE_NAME,'r') as fh:
    for line in fh:

        word_list = line.replace(',','').replace('\'','').replace('.','').lower().split()
        for word in word_list:
            if word not in wordCounter:
                wordCounter[word] = 1
            else:
                wordCounter[word] = wordCounter[word] + 1

for  (word,occurance)  in wordCounter.items(): 
    print(word,occurance)

Answer 1

您可以像这样使用集合:

from collections import Counter

f= open("file.txt","r")
text =f.read()
#clean data
for char in '-.,\n':
    text=text.replace(char,' ')
#to lower
text = text.lower()
#to list
ls = text.split()
#most_common = 20
top_20 = Counter(ls).most_common(20)
#loop all most_common 
for x in top_20:
  print(x)  

结果类似如下:

('dynamic', 3)
('as', 3)
('high', 2)
('level', 2)
('with', 2)
('for', 2)
('python', 1)
('is', 1)
('an', 1)
('interpreted', 1)
('object', 1)
('oriented', 1)
('programming', 1)
('language', 1)
('semantics', 1)
('its', 1)
('built', 1)
('in', 1)
('data', 1)
('structures', 1)