Spotify API を利用して、ライブラリ内の曲の情報などを保存する

Python

Spotify で曲を保存したりしていても、いつか解約したときにすべて消えてしまうような気がしてつらい。 せめてどんな曲を保存していたかの情報があれば、乗り換え先の音楽サービスで同じものを探すことができるかもしれない。 幸い Spotify は善良なサービスなので、API を公開している。これを利用すれば情報を取得できる。

事前に Spotify for Developers に登録してクライアントIDなどを取得する必要がある。 https://developer.spotify.com/dashboard/login

また、Python から Spotify の情報にアクセスするために、Spotipy というライブラリを利用する。 https://github.com/plamere/spotipy

import sys
import spotipy
import spotipy.util as util

scope = 'user-library-read user-follow-read playlist-read-collaborative playlist-read-private'
username = 'your_username'
token = util.prompt_for_user_token(username, scope, client_id='your_client_id',client_secret='your_client_secret',redirect_uri='http://localhost/')

if not token:
    print("Can't get token for", username)
    sys.exit()

sp = spotipy.Spotify(auth=token)

# Get all saved tracks:

# The result is paginated, so use spotipy.Spotify().next() to retrive all items.
results = sp.current_user_saved_tracks(limit=50)
tracks = results['items']
while results['next']:
    results = sp.next(results)
    tracks.extend(results['items'])

for item in tracks:
    track = item['track']
    print(track['name'] + ' - ' + track['artists'][0]['name'])

# Save: tracks

San Diego - South Park
Once Upon a Time - Toby Fox
Start Menu - Toby Fox
...
Ribcage - Kettel
Bootmens - Kettel
Alacasa (Rolando Simmons Remix) - Kettel

# Get all saved albums:

results = sp.current_user_saved_albums(limit=50)
albums = results['items']
while results['next']:
    results = sp.next(results)
    albums.extend(results['items'])

album_tracks = {}
for album in albums:
    album = album['album']
    print(album['name'] + ' - ' + album['artists'][0]['name'])
    results = sp.album_tracks(album['id'])
    this_album_tracks = results['items']
    while results['next']:
        results = sp.next(results)
        this_album_tracks.extend(results['items'])
    album_tracks[album['id']] = this_album_tracks
    for item in this_album_tracks:
        print(item['name'])

# Save: albums, album_tracks

UNDERTALE Soundtrack - Toby Fox
Once Upon a Time
Start Menu
...
Ribcage
Bootmens
Alacasa (Rolando Simmons Remix)

# Get all followed artists:

results = sp.current_user_followed_artists(limit=50)['artists']
artists = results['items']
while results['next']:
    results = sp.next(results)
    artists.extend(results['items'])

for item in artists:
    artist = item
    print(artist['name'])

# Save: artists

Kettel
Domotic
Casey Abrams
...
Aphex Twin
Juana Molina
I Am Robot And Proud

# Get all playlists:

results = sp.current_user_playlists(limit=50)
playlists = results['items']
while results['next']:
    results = sp.next(results)
    playlists.extend(results['items'])

playlist_tracks = {}
for playlist in playlists:
    print(playlist['name'])
    results = sp.user_playlist_tracks(user=sp.me()['id'], playlist_id=playlist['id'])  # playlist の中身を表示
    this_playlist_tracks = results['items']
    while results['next']:
        results = sp.next(results)
        this_playlist_tracks.extend(results['items'])
    playlist_tracks[playlist['id']] = this_playlist_tracks
    for item in this_playlist_tracks:
        print(item['track']['name'])

# Save: playlists, playlist_tracks

Jazz Favorite
Del Sasser
IDM
...
Words (feat. Bri Tolani) [kr1sh Remix]
Angery
Without Your Love (feat. Ralph Larenzo)

data = {'tracks': tracks, 'albums': albums, 'album_tracks': album_tracks, 'artists': artists, 'playlists': playlists, 'playlist_tracks': playlist_tracks}

import pickle
with open('spotify_data.pickle', mode='wb') as f:
    pickle.dump(data, f)