diff --git a/ibis-server/app/main.py b/ibis-server/app/main.py
index d18d49176..af4ff6988 100644
--- a/ibis-server/app/main.py
+++ b/ibis-server/app/main.py
@@ -77,6 +77,7 @@ def custom_http_error_handler(request, exc: CustomHttpError):
         logger.opt(exception=exc).error("Request failed")
     return PlainTextResponse(str(exc), status_code=exc.status_code)
 
+
 @app.exception_handler(NotImplementedError)
 def not_implemented_error_handler(request, exc: NotImplementedError):
-    return PlainTextResponse(str(exc), status_code=501)
\ No newline at end of file
+    return PlainTextResponse(str(exc), status_code=501)
diff --git a/ibis-server/app/model/data_source.py b/ibis-server/app/model/data_source.py
index c4ef98220..ab31feb67 100644
--- a/ibis-server/app/model/data_source.py
+++ b/ibis-server/app/model/data_source.py
@@ -74,7 +74,9 @@ def get_connection(self, info: ConnectionInfo) -> BaseBackend:
             if hasattr(info, "connection_url"):
                 return ibis.connect(info.connection_url.get_secret_value())
             if self.name == "local_file":
-                raise NotImplementedError("Local file connection is not implemented to get ibis backend")
+                raise NotImplementedError(
+                    "Local file connection is not implemented to get ibis backend"
+                )
             return getattr(self, f"get_{self.name}_connection")(info)
         except KeyError:
             raise NotImplementedError(f"Unsupported data source: {self}")
diff --git a/ibis-server/app/model/metadata/object_storage.py b/ibis-server/app/model/metadata/object_storage.py
index f0ce6001a..403dc1b4b 100644
--- a/ibis-server/app/model/metadata/object_storage.py
+++ b/ibis-server/app/model/metadata/object_storage.py
@@ -1,6 +1,7 @@
+import os
+
 import duckdb
 import opendal
-import os
 
 from app.model import LocalFileConnectionInfo
 from app.model.metadata.dto import (
@@ -28,7 +29,7 @@ def get_table_list(self) -> list[Table]:
                     table_name = os.path.basename(os.path.normpath(file.path))
                 else:
                     # if the file is a file, use the file name as the table name
-                    table_name = table_name = os.path.splitext(os.path.basename(file.path))[0]
+                    table_name = os.path.splitext(os.path.basename(file.path))[0]
                 unique_tables[table_name] = Table(
                     name=table_name,
                     description=None,
diff --git a/ibis-server/tests/routers/v2/connector/test_local_file.py b/ibis-server/tests/routers/v2/connector/test_local_file.py
index 4cb348017..cd11f2228 100644
--- a/ibis-server/tests/routers/v2/connector/test_local_file.py
+++ b/ibis-server/tests/routers/v2/connector/test_local_file.py
@@ -231,6 +231,7 @@ async def test_metadata_db_version(client, connection_info):
     assert response.status_code == 200
     assert "Local File System" in response.text
 
+
 async def test_unsupported_format(client):
     response = await client.post(
         url=f"{base_url}/metadata/tables",