python - find the occurrence of the word in a file

问题

I am trying to find the count of words that occured in a file. I have a text file (TEST.txt) the content of the file is as follows:

ashwin programmer india
amith programmer india

The result I expect is:

{ 'ashwin':1, 'programmer ':2,'india':2, 'amith ':1}

The code I am using is:

for line in open(TEST.txt,'r'):
    word = Counter(line.split())
    print word

The result I get is:

Counter({'ashwin': 1, 'programmer': 1,'india':1})
Counter({'amith': 1, 'programmer': 1,'india':1})

Can any one please help me? Thanks in advance .

回答1:

Use the update method of Counter. Example:

from collections import Counter

data = '''\
ashwin programmer india
amith programmer india'''

c = Counter()
for line in data.splitlines():
    c.update(line.split())
print(c)

Output:

Counter({'india': 2, 'programmer': 2, 'amith': 1, 'ashwin': 1})

回答2:

from collections import Counter;
cnt = Counter ();

for line in open ('TEST.txt', 'r'):
  for word in line.split ():
    cnt [word] += 1

print cnt

回答3:

You're iterating over every line and calling Counter each time. You want Counter to run over the entire file. Try:

from collections import Counter

with open("TEST.txt", "r") as f:
    # Used file context read and save into contents
    contents = f.read().split()
print Counter(contents)

回答4:

Using a Defaultdict:

from collections import defaultdict 

def read_file(fname):

    words_dict = defaultdict(int)
    fp = open(fname, 'r')
    lines = fp.readlines()
    words = []

    for line in lines:
        words += line.split(' ')

    for word in words:
        words_dict[word] += 1

    return words_dict

回答5:

FILE_NAME = 'file.txt'

wordCounter = {}

with open(FILE_NAME,'r') as fh:
  for line in fh:
    # Replacing punctuation characters. Making the string to lower.
    # The split will spit the line into a list.
    word_list = line.replace(',','').replace('\'','').replace('.','').lower().split()
    for word in word_list:
      # Adding  the word into the wordCounter dictionary.
      if word not in wordCounter:
        wordCounter[word] = 1
      else:
        # if the word is already in the dictionary update its count.
        wordCounter[word] = wordCounter[word] + 1

print('{:15}{:3}'.format('Word','Count'))
print('-' * 18)

# printing the words and its occurrence.
for  (word,occurance)  in wordCounter.items(): 
  print('{:15}{:3}'.format(word,occurance))

回答6:

f = open('input.txt', 'r')
data=f.read().lower()
list1=data.split()

d={}
for i in set(list1):
    d[i]=0

for i in list1:
    for j in d.keys():
       if i==j:
          d[i]=d[i]+1
print(d)

来源：https://stackoverflow.com/questions/15083119/python-find-the-occurrence-of-the-word-in-a-file

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python

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