Apply pylint's linting rules to bfxapi/websocket/__init__.py, bfxapi/websocket/enums.py, bfxapi/websocket/exceptions.py, bfxapi/websocket/serializers.py and bfxapi/websocket/subscriptions.py.

bfxapi/websocket/exceptions.py

@@ -16,53 +16,39 @@ class BfxWebsocketException(BfxBaseException):
     Base class for all custom exceptions in bfxapi/websocket/exceptions.py.
     """
 
-    pass
-
 class ConnectionNotOpen(BfxWebsocketException):
     """
     This error indicates an attempt to communicate via websocket before starting the connection with the servers.
     """
 
-    pass
-
 class TooManySubscriptions(BfxWebsocketException):
     """
-    This error indicates an attempt to subscribe to a public channel after reaching the limit of simultaneous connections.
+    This error indicates a subscription attempt after reaching the limit of simultaneous connections.
     """
 
-    pass
-
 class WebsocketAuthenticationRequired(BfxWebsocketException):
     """
     This error indicates an attempt to access a protected resource without logging in first.
     """
 
-    pass
-
 class EventNotSupported(BfxWebsocketException):
     """
     This error indicates a failed attempt to subscribe to an event not supported by the BfxWebsocketClient.
     """
 
-    pass
-
 class OutdatedClientVersion(BfxWebsocketException):
     """
     This error indicates a mismatch between the client version and the server WSS version.
     """
 
-    pass
 
 class InvalidAuthenticationCredentials(BfxWebsocketException):
     """
     This error indicates that the user has provided incorrect credentials (API-KEY and API-SECRET) for authentication.
     """
 
-    pass
 
 class HandlerNotFound(BfxWebsocketException):
     """
     This error indicates that a handler was not found for an incoming message.
     """
-
-    pass