fix ruff format

Author: asheshvidyut

src/mcp/client/session.py

@@ -109,7 +109,7 @@ class ClientSession(
         types.ClientResult,
         types.ServerRequest,
         types.ServerNotification,
-    ]
+    ],
 ):
     def __init__(
         self,

src/mcp/client/transport_session.py

@@ -130,4 +130,4 @@ async def list_tools(
     @abstractmethod
     async def send_roots_list_changed(self) -> None:
         """Send a roots/list_changed notification."""
-        raise NotImplementedError
+        raise NotImplementedError

src/mcp/server/session.py

@@ -78,7 +78,7 @@ class ServerSession(
         types.ServerResult,
         types.ClientRequest,
         types.ClientNotification,
-    ]
+    ],
 ):
     _initialized: InitializationState = InitializationState.NotInitialized
     _client_params: types.InitializeRequestParams | None = None

src/mcp/server/transport_session.py

@@ -7,6 +7,7 @@
 
 import mcp.types as types
 
+
 class TransportSession(abc.ABC):
     """Abstract base class for transport sessions."""