mp3_mass_editor.py

# Specifically created to mass-edit Ponies At Dawn artist information
# The Bandcamp downloader I used does not set this properly, and instead puts the artist in the filename
# Uploading here for my personal reference
# Based on https://methodmatters.github.io/editing-id3-tags-mp3-meta-data-in-python

from mutagen.mp3 import MP3
from mutagen.easyid3 import EasyID3

import glob
import os
import shutil


files = glob.glob("in\\*\\*.mp3")
for path in files:
    path_split = path.split('\\')
    name_split = path_split[-1].split(" - ")

    title = name_split[1][:-4]
    artist = name_split[0][3:]
    if ' & ' in artist:
        artist = '/'.join(artist.split(' & '))
    if ', ' in artist:
        artist = '/'.join(artist.split(', '))

    new_dir = f'out\\{path_split[1]}'
    if not os.path.exists(new_dir) and not os.path.isdir(new_dir):
        os.mkdir(new_dir)

    new_path = f'{new_dir}\\{name_split[0][:3]}{name_split[1]}'
    shutil.copy2(path, new_path)

    mp3 = MP3(new_path, ID3=EasyID3)
    mp3['title'] = title
    mp3['artist'] = artist
    mp3.save()