spotipy: Invalid track uri: spotify:track:s

[callrua]

I'm being thrown the following exception when trying to add a track to a playlist via user_playlist_add_tracks using a track URI.

Code sample;

import spotipy
import spotipy.util as util

username = 'my-username'
client_id ='my-spotify-client-id'
client_secret ='my-spotify-client-secret-id'
scope = 'playlist-modify-private, user-read-recently-played, playlist-modify-public'

token = util.prompt_for_user_token(username, scope,
                                    my-client-id,
                                    my-spotify-client-secret,
                                    'http://localhost/')

if token:
    sp = spotipy.Spotify(auth=token)
    song = 'spotify:track:6b2oQwSGFkzsMtQruIWm2p'

    sp.user_playlist_add_tracks(username, '7qblqNYOVQDOgQIFYBd3sD', song, position=None)

else:
    print "Can't get token for", username

I am thrown the following error message;

Traceback (most recent call last):
  File "[...]spotifyTest.py", line 19, in <module>
    sp.user_playlist_add_tracks(username, '7fBJQPuIZg9U26ew16Ntgb', song)
  File "[...]\venv\lib\site-packages\spotipy\client.py", line 457, in user_playlist_add_tracks
    payload=ftracks, position=position)
  File "[...]\venv\lib\site-packages\spotipy\client.py", line 178, in _post
    return self._internal_call('POST', url, payload, kwargs)
  File "[...]\venv\lib\site-packages\spotipy\client.py", line 124, in _internal_call
    headers=r.headers)
spotipy.client.SpotifyException: http status: 400, code:-1 - https://api.spotify.com/v1/users/'username'/playlists/7qblqNYOVQDOgQIFYBd3sD/tracks:
 Invalid track uri: spotify:track:s

I've had success accessing and creating new playlists, however I've hit a roadblock when it comes to actually adding a track.
I assume it's something simple, the URI is correct (if i search via spotify desktop it works), I'm not sure.
I've tried explicitly passing the URI ID and passing it via variable, no joy with either.

[kylegbakker]

Hi there,

Track must be in an array, song = [6b2oQwSGFkzsMtQruIWm2p]

[callrua]

Thanks @TheFridgeMaster