Reverse a Spotify playlist

reverse-playlist.py

import os

import spotipy
import spotipy.util as util

'''
python3 script to reverse a Spotify playlist, i.e.:

    A B C D E (before)
    E D C B A (after)

Create a new Spotify app on https://developer.spotify.com/.
Set `http://localhost/` as the callback URL.

Then replace the ENV variables accordingly and run the following 2 commands:

    pip3 install spotipy

    CLIENT_ID='<replace>' \
        CLIENT_SECRET='<replace>' \
        USER_ID='<replace>' \
        PLAYLIST_ID='<replace>' \
        python3 reverse-playlist.py
'''

CLIENT_ID = os.environ['CLIENT_ID']
CLIENT_SECRET = os.environ['CLIENT_SECRET']
USER_ID = os.environ['USER_ID']
REDIRECT_URI = 'http://localhost/'
PLAYLIST_ID = os.environ['PLAYLIST_ID']
SCOPE = 'playlist-read-private playlist-modify-private playlist-modify-public'


def get_spotify_instance():
    token = util.prompt_for_user_token(
        username=USER_ID,
        scope=SCOPE,
        client_id=CLIENT_ID,
        client_secret=CLIENT_SECRET,
        redirect_uri=REDIRECT_URI)
    return spotipy.Spotify(auth=token)


def reverse():
    sp = get_spotify_instance()
    playlist = sp.user_playlist(USER_ID, PLAYLIST_ID)
    total = playlist['tracks']['total']
    snapshot_id = playlist['snapshot_id']

    i = 0
    while i < total:
        try:
            res = sp.user_playlist_reorder_tracks(USER_ID, PLAYLIST_ID, 0, total - i, snapshot_id=snapshot_id)
            print(playlist['name'], res, str(i + 1) + "/" + str(total))
            snapshot_id = res['snapshot_id']
            i += 1
        except Exception as e:
            print("Spotify API rate limit exceeded or token expired, please wait...:", e)
            sp = get_spotify_instance()


if __name__ == "__main__":
    reverse()