A Script for changing ID3 title to filename

change_title_to_filename.py

#!/usr/bin/env python

""" A Script for changing ID3 title to filename

This script was used to prepare a directory containing many files in sub
directories, for import using beets (https://github.com/sampsyo/beets).
"""

import fnmatch
import os
import re

from mutagen.id3 import ID3, TIT2


def change_title(name):
    f = ID3(name)
    new_title = re.sub(r'^.*/(\d.*)$', r'\1', f.filename)
    f.add(TIT2(encoding=3, text=new_title.decode('utf-8')))
    f.save()
    print('-> {}'.format(new_title))

matches = []
for root, dirnames, filenames in os.walk('.'):
    for filename in fnmatch.filter(filenames, '*.mp3'):
        matches.append(os.path.join(root, filename))

for name in matches:
    change_title(name)