diff --git a/fastapi/openapi/models.py b/fastapi/openapi/models.py
index d5eee02d4..e2abca215 100644
--- a/fastapi/openapi/models.py
+++ b/fastapi/openapi/models.py
@@ -14,7 +14,6 @@ from pydantic import AnyUrl, BaseModel, Field, validator
 from typing_extensions import Annotated, Literal, TypedDict
 from typing_extensions import deprecated as typing_deprecated
 
-
 try:
     import email_validator
 
@@ -444,7 +443,8 @@ class OpenAPI(BaseModelWithConfig):
     def check_tags(cls, tags):  # type: ignore
         unique_names = set()
         assert not any(
-            t.name in unique_names or unique_names.add(t.name) for t in tags  # type: ignore
+            t.name in unique_names or unique_names.add(t.name)
+            for t in tags  # type: ignore
         ), "Tag names must be unique"
         return tags
 
diff --git a/fastapi/openapi/utils.py b/fastapi/openapi/utils.py
index e51cafb56..5f533b8c2 100644
--- a/fastapi/openapi/utils.py
+++ b/fastapi/openapi/utils.py
@@ -568,5 +568,7 @@ def get_openapi(
         # discard tags with non-unique names as it is against the OpenAPI spec
         # https://swagger.io/specification/#openapi-object
         names = set()
-        output["tags"] = [t for t in tags if t["name"] not in names and not names.add(t["name"])]  # type: ignore
+        output["tags"] = [
+            t for t in tags if t["name"] not in names and not names.add(t["name"])
+        ]  # type: ignore
     return jsonable_encoder(OpenAPI(**output), by_alias=True, exclude_none=True)  # type: ignore