added page limit pass through variable

spotframework/model/track.py

@@ -308,6 +308,27 @@ class AudioFeatures:
         self.track_href = track_href
         self.valence = self.check_float(valence)
 
+    def to_dict(self):
+        return {
+            'acousticness': self.acousticness,
+            'analysis_url': self.analysis_url,
+            'danceability': self.danceability,
+            'duration_ms': self.duration_ms,
+            'energy': self.energy,
+            'uri': str(self.uri) if self.uri is not None else None,
+            'instrumentalness': self.instrumentalness,
+            'key': self.key,
+            'key_code': self._key,
+            'liveness': self.liveness,
+            'loudness': self.loudness,
+            'mode': self.mode.value,
+            'speechiness': self.speechiness,
+            'tempo': self.tempo,
+            'time_signature': self.time_signature,
+            'track_href': self.track_href,
+            'valence': self.valence
+        }
+
     @property
     def key(self) -> str:
         legend = {

spotframework/net/network.py

@@ -808,8 +808,13 @@ class Network:
 
             if resp:
                 if resp.get('audio_features', None):
-                    parsed_features = [self.parse_audio_features(i) for i in resp['audio_features']]
+
-                    audio_features += parsed_features
+                    for feature in resp['audio_features']:
+                        if feature is not None:
+                            audio_features.append(self.parse_audio_features(feature))
+                        else:
+                            audio_features.append(None)
+
                 else:
                     logger.error('no audio features included')
             else:
@@ -840,6 +845,9 @@ class Network:
                 audio_features = self.get_track_audio_features([i.uri for i in tracks])
 
                 if audio_features:
+                    if len(audio_features) != len(tracks):
+                        logger.error(f'{len(audio_features)} features returned for {len(tracks)} tracks')
+
                     for index, track in enumerate(tracks):
                         track.audio_features = audio_features[index]