improve handling of err responses with no payload

examples/audio_features_for_track.py

@@ -0,0 +1,26 @@
+
+
+# shows acoustic features for tracks for the given artist
+
+from __future__ import print_function    # (at top of module)
+from spotipy.oauth2 import SpotifyClientCredentials
+import json
+import spotipy
+import time
+import sys
+
+
+client_credentials_manager = SpotifyClientCredentials()
+sp = spotipy.Spotify(client_credentials_manager=client_credentials_manager)
+sp.trace=True
+
+if len(sys.argv) > 1:
+    tids = sys.argv[1:]
+    print(tids)
+
+    start = time.time()
+    features = sp.audio_features(tids)
+    delta = time.time() - start
+    print ("features", features)
+    print(json.dumps(features, indent=4))
+    print ("features retrieved in %.2f seconds" % (delta,))

examples/errors.py

@@ -0,0 +1,23 @@
+# shows acoustic features for tracks for the given artist
+
+from __future__ import print_function    # (at top of module)
+from spotipy.oauth2 import SpotifyClientCredentials
+import json
+import spotipy
+import time
+import sys
+
+
+client_credentials_manager = SpotifyClientCredentials()
+sp = spotipy.Spotify(client_credentials_manager=client_credentials_manager)
+sp.trace=True
+try:
+    print ('bad call 0')
+    bad_artist_call = sp.artist('spotify:artist:12341234')
+except spotipy.client.SpotifyException:
+    print ('bad call 0 exception' )
+
+print ('bad call 1')
+bad_artist_call = sp.artist('spotify:artist:12341234')
+print ('bad artist', bad_artist_call)
+