fix musicPackage export

Author: previ

api.py

@@ -187,7 +187,7 @@ def listMusicPackages():
     """
     musicPkg = MusicPackageManager.get_instance()
     response = musicPkg.listPackages()
-    return json.dumps(response)
+    return json.dumps(response.__dict__)
 
 def updateMusicPackages():
     """

musicPackages.py

@@ -30,15 +30,8 @@
 import os
 
 class MusicPackage:
-    name_IT = None
-    name_EN = None
-    category = None
-    version = None
-    date = None
-    interfaces = None
-    nameID = None
-
-    def __init__(self,nameID,category,name_IT,name_EN,version,date):
+
+    def __init__(self, nameID, category, name_IT,n ame_EN, version, date):
         self.nameID = nameID
         self.category = category
         self.name_IT = name_IT
@@ -49,26 +42,29 @@ def __init__(self,nameID,category,name_IT,name_EN,version,date):
 
     def getNameID(self):
         return self.nameID
+
     def getCategory(self):
         return self.category
+
     def getNameIT(self):
         return self.name_IT
+
     def getNameEN(self):
         return self.name_EN
+
     def getVersion(self):
         return self.version
+
     def getDate(self):
         return self.date
+
     def getInterfaces(self):
         return self.interfaces
 
-    def addInterface(self,musicPackageInterface):
+    def addInterface(self, musicPackageInterface):
         self.interfaces.append(musicPackageInterface)
 
 class MusicPackageInterface:
-    interfaceName = None
-    available = None
-    icon = None
 
     def __init__(self,interfaceName,available,icon):
         self.interfaceName = interfaceName
@@ -86,7 +82,6 @@ def getIcon(self):
 
 class MusicPackageManager:
     _instance = None
-    packages = None
 
     @classmethod
     def get_instance(cls):