Remove mutable objects from function args

couchpotato/core/notifications/base.py

@@ -32,7 +32,9 @@ class Notification(Provider):
                 addEvent(listener, self.createNotifyHandler(listener))
 
     def createNotifyHandler(self, listener):
-        def notify(message = None, group = {}, data = None):
+        def notify(message = None, group = None, data = None):
+            if not group: group = {}
+
             if not self.conf('on_snatch', default = True) and listener == 'movie.snatched':
                 return
             return self._notify(message = message, data = data if data else group, listener = listener)
@@ -47,8 +49,8 @@ class Notification(Provider):
             return self.notify(*args, **kwargs)
         return False
 
-    def notify(self, message = '', data = {}, listener = None):
-        pass
+    def notify(self, message = '', data = None, listener = None):
+        if not data: data = {}
 
     def test(self, **kwargs):