py3: Use itervalues() for local track database

mopidy/compat.py

@@ -13,6 +13,9 @@ if PY2:
 
     input = raw_input
 
+    def itervalues(dct, **kwargs):
+        return iter(dct.itervalues(**kwargs))
+
 else:
     import configparser  # noqa
     import queue  # noqa
@@ -22,3 +25,6 @@ else:
     text_type = str
 
     input = input
+
+    def itervalues(dct, **kwargs):
+        return iter(dct.values(**kwargs))

mopidy/local/json.py

@@ -11,7 +11,7 @@ import tempfile
 import time
 
 import mopidy
-from mopidy import local, models
+from mopidy import compat, local, models
 from mopidy.local import search, storage, translator
 from mopidy.utils import encoding
 
@@ -164,7 +164,7 @@ class JsonLibrary(local.Library):
             return search.search(tracks, query=query, uris=uris)
 
     def begin(self):
-        return self._tracks.values()
+        return compat.itervalues(self._tracks)
 
     def add(self, track):
         self._tracks[track.uri] = track