Use @singleton decorator

app/vlcmanager.py

@@ -6,24 +6,17 @@
 import vlc  # type: ignore
 
 # App imports
+from classes import singleton
 
 
+@singleton
 class VLCManager:
     """
     Singleton class to ensure we only ever have one vlc Instance
     """
 
-    __instance = None
-
     def __init__(self) -> None:
-        if VLCManager.__instance is None:
-            self.vlc_instance = vlc.Instance()
-            VLCManager.__instance = self
-        else:
-            raise Exception("Attempted to create a second VLCManager instance")
+        self.vlc_instance = vlc.Instance()
 
-    @staticmethod
-    def get_instance() -> vlc.Instance:
-        if VLCManager.__instance is None:
-            VLCManager()
-        return VLCManager.__instance
+    def get_instance(self) -> vlc.Instance:
+        return self.vlc_instance