diff --git a/fastapi/openapi/utils.py b/fastapi/openapi/utils.py
index 6ed0d22b8..910a56d55 100644
--- a/fastapi/openapi/utils.py
+++ b/fastapi/openapi/utils.py
@@ -246,11 +246,7 @@ def get_openapi_operation_metadata(
     operation_id = route.operation_id or route.unique_id
     # If the route has multiple methods and operation_id was not explicitly set,
     # append the method to make each operation ID unique
-    if (
-        not route.operation_id
-        and route.methods
-        and len(route.methods) > 1
-    ):
+    if not route.operation_id and route.methods and len(route.methods) > 1:
         # unique_id already includes a method suffix, so we need to replace it
         # with the actual method being processed
         # unique_id format: "{name}_{path}_{first_method}"
diff --git a/tests/test_duplicate_operation_id.py b/tests/test_duplicate_operation_id.py
index 1a984a771..23eecc19e 100644
--- a/tests/test_duplicate_operation_id.py
+++ b/tests/test_duplicate_operation_id.py
@@ -2,10 +2,10 @@
 Test that routes with multiple methods get unique operation IDs.
 Related to issue #13175
 """
+
 import warnings
 
 from fastapi import FastAPI
-from fastapi.testclient import TestClient
 
 
 def test_multiple_methods_unique_operation_ids():
@@ -25,8 +25,7 @@ def test_multiple_methods_unique_operation_ids():
 
         # Check that no duplicate operation ID warning was raised
         duplicate_warnings = [
-            warning for warning in w
-            if "Duplicate Operation ID" in str(warning.message)
+            warning for warning in w if "Duplicate Operation ID" in str(warning.message)
         ]
         assert len(duplicate_warnings) == 0, (
             f"Found {len(duplicate_warnings)} duplicate operation ID warnings: "
@@ -46,8 +45,7 @@ def test_multiple_methods_unique_operation_ids():
     delete_op_id = clear_path["delete"]["operationId"]
 
     assert post_op_id != delete_op_id, (
-        f"Operation IDs should be different: "
-        f"POST={post_op_id}, DELETE={delete_op_id}"
+        f"Operation IDs should be different: POST={post_op_id}, DELETE={delete_op_id}"
     )
 
 
@@ -68,8 +66,7 @@ def test_multiple_routes_with_multiple_methods():
         openapi_schema = app.openapi()
 
         duplicate_warnings = [
-            warning for warning in w
-            if "Duplicate Operation ID" in str(warning.message)
+            warning for warning in w if "Duplicate Operation ID" in str(warning.message)
         ]
         assert len(duplicate_warnings) == 0
 
@@ -113,8 +110,7 @@ def test_add_api_route_with_multiple_methods():
         openapi_schema = app.openapi()
 
         duplicate_warnings = [
-            warning for warning in w
-            if "Duplicate Operation ID" in str(warning.message)
+            warning for warning in w if "Duplicate Operation ID" in str(warning.message)
         ]
         assert len(duplicate_warnings) == 0