Question

求解 python 练习题

Write a function named makeWordList() that takes two parameters:
1. readFileName is a string that is the name of a file containing text
2. writeFileName is a string that is the name of a file that makeWordList() writes its output to.
Each line in the output file should consist of one of the words in the input file, followed by a space,
followed by the number of occurrences of that word in the input file, including both capitalized and
lower case occurrences. You may assume that the file contains only letters – no numbers or punctuation
marks.
For example, if the input file contains the following text
You can steer yourself any direction you choose
then the output file should have the following content:
any 1
yourself 1
choose 1
you 2
direction 1
can 1
steer 1

Answer 1

import string
def makeWordList(input_file, output_file):
    
    table = string.maketrans("", "")
    try:
        word_list = dict()
        for line in open(input_file, 'r'):
            line = line.translate(table, string.punctuation).rstrip('\r\n').split(' ')
            for word in line:
                if not word in word_list:
                    word_list[word] = 1
                else:
                    word_list[word] += 1
        f = open(output_file, 'w')
        for k,v in word_list.items():
            line = '%s %s\r\n' % (k,v)
            f.write(line)

    except:
        print input_file,'not exist'
            
            
    
makeWordList('input.txt', 'output.txt')