Added comments

handlers/message_handlers/handler.py

@@ -6,6 +6,7 @@ from aiogram.filters import Filter
 
 
 class MessageHandlerABC(ABC):
+    """Base class for all message handlers"""
     bot: Bot
     
     def __init__(self, bot: Bot, *args: Any, **kwargs: Dict[str, Any]) -> None:
@@ -14,13 +15,16 @@ class MessageHandlerABC(ABC):
         
     @abstractmethod
     def _command(self, *args, **kwargs):
+        """Handler for the command"""
         raise NotImplementedError
     
     @property
     def handler(self) -> Coroutine[None, None, None]:
+        """Command handler method"""
         return self._command        
     
     @property
     @abstractmethod
     def filter(self) -> Filter:
+        """Filter for the command"""
         raise NotImplementedError