Question

我在文件中有一组单词。我想添加一个由制表符分隔的新字符到所有这些单词并写入新文件。我写的代码是

#file to read is opened as ff and file to write is opened as fw.
count = "X"
x = ff.readlines()
for word in x:
     fw.write('%s\t%s'% (word, count))
     fw.write("\n")

问题是新单词“X”与现有单词不对齐。我得到的样本输出是

 A.
      O
 Mahesh
      O
 Anand
      O
 Anton
      O
 Plot

我想要的输出是：

Original File
word
word2

New File 
word    X
word2    X

我希望它能正确对齐

Answer 1

readlines()包含行尾字符：

In [6]: ff.readlines()
Out[6]: ['word1\n', 'word2']

您需要strip them off：

word = word.rstrip()

count = "X"
with open('data', 'r') as ff, open('/tmp/out', 'w') as fw:
    for word in ff:
        word = word.rstrip()  # strip only trailing whitespace
        fw.write("{}\t{}\n".format(word, count))

Answer 2

使用str.rstrip()删除行尾\n。

使用context manager with语句打开文件，并使用str.formate写入文件。

with open('out_file.txt') as ff, open('in_file.txt', 'w+') as r:
    for line in ff:
        r.write('{}\t{!r}\n'.format(line.rstrip(), 'X'))
    r.seek(0)
    print r.read()

>>> 
   word1    'X'
   word2    'X'
   word3    'X'
   word4    'X'

Answer 3

你应该删除＆＃39; \ n＆＃39;：

count = "X"
with open('data', 'r') as ff, open('/tmp/out', 'w') as fw:
    for word in ff.readlines():
        print >> fw, '%s\t%s' % (word.rstrip(), count)

在Python中将制表符间隔的单词写入文件

3 个答案: