Question

我试图在python中使用正则表达式从文件中提取某些单词，但我无法得到它。我的原始文件看起来像

List/VB 
[ the/DT flights/NNS ]
from/IN

我希望输出为

List VB 
the DT
flights NNS
from IN

我写了以下代码：

import re

with open("in.txt",'r') as infile, open("out.txt",'w') as outfile: 
    for line in infile:
        if (re.match(r'(?:[\s)?(\w\\\w)',line)):
            outfile.write(line)

Answer 1

import re

expr = re.compile("(([\w]+)\/([\w]+))", re.M)
fp = open("file_list.txt",'r')
lines = fp.read()
fp.close()
a = expr.findall(lines)
for el in expr.findall(lines):
    print ' '.join(el[1:])

输出：

List VB
the DT
flights NNS
from IN

Python文件正则表达式匹配

1 个答案: