I am a bit confused as to how access artists name in this JSON result:
artists
{ \"tracks\" : { \"href\" : \"https://api.spotify.com/
artists is a list of dicts, because a track can have many artists. Similarly items is also a list. So for example you can do results['tracks']['items'][0]['artists'][0]['name'], but that will only get you the first artist of the first track.
items
results['tracks']['items'][0]['artists'][0]['name']