Python3 Migrate

venv/lib/python3.7/site-packages/mopidy/models/serialize.py

@@ -0,0 +1,43 @@
+import json
+
+from mopidy.models import immutable
+
+
+class ModelJSONEncoder(json.JSONEncoder):
+
+    """
+    Automatically serialize Mopidy models to JSON.
+
+    Usage::
+
+        >>> import json
+        >>> json.dumps({'a_track': Track(name='name')}, cls=ModelJSONEncoder)
+        '{"a_track": {"__model__": "Track", "name": "name"}}'
+
+    """
+
+    def default(self, obj):
+        if isinstance(obj, immutable.ImmutableObject):
+            return obj.serialize()
+        return json.JSONEncoder.default(self, obj)
+
+
+def model_json_decoder(dct):
+    """
+    Automatically deserialize Mopidy models from JSON.
+
+    Usage::
+
+        >>> import json
+        >>> json.loads(
+        ...     '{"a_track": {"__model__": "Track", "name": "name"}}',
+        ...     object_hook=model_json_decoder)
+        {u'a_track': Track(artists=[], name=u'name')}
+
+    """
+    if "__model__" in dct:
+        model_name = dct.pop("__model__")
+        if model_name in immutable._models:
+            cls = immutable._models[model_name]
+            return cls(**dct)
+    return dct