Use the playlist_items function to retrieve tracks.

* It will request the same endpoint as sp.next with the same fields for consistency.

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Changes the YouTube video link for authentication tutorial (the old video was in low definition, the new one is in high definition)
 - Updated links to Spotify in documentation
 - Improve usability on README.md
+- Fix `user_playlists_contents` example. 
 
 ## [2.23.0] - 2023-04-07
 

examples/user_playlists_contents.py

@@ -25,8 +25,7 @@ if __name__ == '__main__':
             print(playlist['name'])
             print('  total tracks', playlist['tracks']['total'])
 
-            results = sp.playlist(playlist['id'], fields="tracks,next")
-            tracks = results['tracks']
+            tracks = sp.playlist_items(playlist['id'], fields="items,next", additional_types=('tracks', ))
             show_tracks(tracks)
 
             while tracks['next']: