在目录中循环正则表达式并保存输出

Question

I was able to run the regex on multiple files, I want to save the output of this like name_of_file_clean.txt .

Trying to find the best way.

import os, re
import glob

pattern = re.compile(r'(?<=CN=)(.*?)(?=,)')
for file in glob.glob('*.txt'):
    with open(file) as fp:
        for result in pattern.findall(fp.read()):
           print(result)

Answer 1

We'll just open the output file and use the print functions file keyword argument to write to the file

import os, re
import glob

pattern = re.compile(r'(?<=CN=)(.*?)(?=,)')
for file in glob.glob('*.txt'):
    with open(file) as fp:
        with open(file[:-4] + '_clean.txt', 'w') as outfile:
            for result in pattern.findall(fp.read()):
               print(result, file=outfile)