Create playlists of 10000 tracks with the artists followed. Create playlists for all the audio features of your followed artists ("energy", "deancability", etc...)
command line python script : --client_id user_client_id --secret user_id_client --username toto --complete
--client_id and --client_secret: see 'https://developer.spotify.com/documentation/general/guides/app-settings/'.
--complete means that the database is created locally on the pc with the artists followed by spotify.