Question

It would really make my work easier if someone could help me with writing script in python or perl in which from given file it retreives all sentences like:

[LANG::...]

• … means anything

for ecxample:

[LANG::Sample text with digits 0123]

and writes it to the fileeach in single line.

Thanks very much for help

EDIT:

Thanks for help, and now something more advanced.

if it finds something like [:ANG:: …] please write only … without brackets ang LANG:: tag.

Thanks guys You are awesome 🙂

Answer 1

import re

with open('input.txt', 'w') as f:
    text = f.read()
#text = 'Intro [LANG::First text 1] goes on [LANG::Second text 2] and finishes.'

with open('output.txt', 'w') as f:
    for match in re.findall('\[LANG::.*?\]', text):
        f.write(match+'\n')

outputs:

[LANG::First text 1]
[LANG::Second text 2]

Second part of the question: if it finds something like [:ANG:: …] please write only … without brackets and LANG:: tag.

Change the last part to:

with open('output.txt', 'w') as f:
    for match in re.findall('\[.ANG::.*?\]', text):
        if match.startswith('[:ANG'):
            f.write(match[7:-1]+'\n')
        else:
            f.write(match+'\n')

Fix that substring part match[7:-1] to your needs.