ID3Tag your *.(mp3|flac) from filename

batch-rename-id3tag-from-filename.py

# origin code by hiryu85
# https://github.com/hiryu85/python-ID3TagFromFilename/blob/master/id3fromfile.py
# rewrite at 2022.06.04

from glob import glob
from re import match
from string import Template
from sys import argv, exit

from mutagen import File

ID3TagMap = {
    'tracknumber': '(?P<trackNum>\d+)',
    'title': '(?P<title>.+)',
    'artist': '(?P<artist>.+)',
    'album': '(?P<album>.+)',
}

if __name__ == '__main__':

    if len(argv) < 2:
        print('Usage: %s "pattern" <template>' % argv[0])
        exit(1)

    file_pattern, file_template = argv[1:]
    print('Matching %s:' % file_pattern)

    for fname in glob(file_pattern):
        ftitle = ''.join(fname.rsplit('.', 1)[:-1])
        print(fname + ' ...', end="")
        try:
            id3tag_regex_pattern = r'^%s$' % Template(file_template).substitute(ID3TagMap)
            try:
                id3tags = match(id3tag_regex_pattern, ftitle).groupdict([])
                audiofile = File(fname)
                try:
                    audiofile.add_tags()
                except Exception:
                    pass

                if len(audiofile.keys()) > 1:
                    print(" SKIPPED")
                    continue

                for tag in id3tags.keys():
                    value = id3tags[tag]
                    audiofile[tag.upper()] = value
                audiofile.save()

                print(' [OK]')
            except Exception as e:
                print(repr(e))
                pass
        except ValueError:
            pass