diff --git a/google/api_core/operations_v1/abstract_operations_async_client.py b/google/api_core/operations_v1/abstract_operations_async_client.py
index c7e3e4a1..12a194f3 100644
--- a/google/api_core/operations_v1/abstract_operations_async_client.py
+++ b/google/api_core/operations_v1/abstract_operations_async_client.py
@@ -39,7 +39,6 @@
 from google.longrunning import operations_pb2
 
 
-
 class AbstractOperationsAsyncClient(AbstractOperationsBaseClient):
     """Manages long-running operations with an API service for the asynchronous client.
 
@@ -99,7 +98,7 @@ def __init__(
                 creation failed for any reason.
         """
         super().__init__(
-            credentials=credentials, # type: ignore
+            credentials=credentials,  # type: ignore
             transport=transport,
             client_options=client_options,
             client_info=client_info,
diff --git a/google/api_core/operations_v1/abstract_operations_base_client.py b/google/api_core/operations_v1/abstract_operations_base_client.py
index 4e52fe19..58135b60 100644
--- a/google/api_core/operations_v1/abstract_operations_base_client.py
+++ b/google/api_core/operations_v1/abstract_operations_base_client.py
@@ -25,6 +25,7 @@
     OperationsTransport,
 )
 from google.api_core.operations_v1.transports.rest import OperationsRestTransport
+
 try:
     from google.api_core.operations_v1.transports.rest_asyncio import (
         OperationsRestAsyncTransport,
@@ -70,7 +71,9 @@ def get_transport_class(
             The transport class to use.
         """
         # If a specific transport is requested, return that one.
-        if label == "rest_asyncio" and not HAS_ASYNC_REST_DEPENDENCIES:  # pragma: NO COVER
+        if (
+            label == "rest_asyncio" and not HAS_ASYNC_REST_DEPENDENCIES
+        ):  # pragma: NO COVER
             raise ASYNC_REST_EXCEPTION
 
         if label:
diff --git a/google/api_core/operations_v1/transports/__init__.py b/google/api_core/operations_v1/transports/__init__.py
index 052247dd..bf587884 100644
--- a/google/api_core/operations_v1/transports/__init__.py
+++ b/google/api_core/operations_v1/transports/__init__.py
@@ -34,11 +34,11 @@
 
 if HAS_ASYNC_TRANSPORT:
     _transport_registry["rest_asyncio"] = OperationsRestAsyncTransport
-    ASYNC_REST_CLASSES = ("OperationsRestAsyncTransport", )
+    ASYNC_REST_CLASSES = ("OperationsRestAsyncTransport",)
 else:
     ASYNC_REST_CLASSES = ()
 
 __all__ = (
     "OperationsTransport",
     "OperationsRestTransport",
-) + ASYNC_REST_CLASSES
\ No newline at end of file
+) + ASYNC_REST_CLASSES
diff --git a/google/api_core/operations_v1/transports/rest_asyncio.py b/google/api_core/operations_v1/transports/rest_asyncio.py
index 558c5b14..2aeda370 100644
--- a/google/api_core/operations_v1/transports/rest_asyncio.py
+++ b/google/api_core/operations_v1/transports/rest_asyncio.py
@@ -125,14 +125,14 @@ def __init__(
 
         super().__init__(
             host=host,
-            credentials=credentials, # type: ignore
+            credentials=credentials,  # type: ignore
             client_info=client_info,
             always_use_jwt_access=always_use_jwt_access,
         )
         # TODO(https://github.com/googleapis/python-api-core/issues/708): add support for
         # `default_host` in AsyncAuthorizedSession for feature parity with the synchronous
         # code.
-        self._session = AsyncAuthorizedSession(self._credentials) # type: ignore
+        self._session = AsyncAuthorizedSession(self._credentials)  # type: ignore
         self._prep_wrapped_messages(client_info)
         self._http_options = http_options or {}
         self._path_prefix = path_prefix