Formatting

Author: holtskinner

noxfile.py

@@ -114,9 +114,15 @@ def format(session):
         'pyupgrade',
         'autoflake',
         'ruff',
+        'no_implicit_optional',
     )
 
     if lint_paths_py:
+        session.run(
+            'no_implicit_optional',
+            '--use-union-or',
+            *lint_paths_py,
+        )
         if not format_all:
             session.run(
                 'pyupgrade',

src/a2a/utils/task.py

@@ -18,7 +18,7 @@ def completed_task(
     task_id: str,
     context_id: str,
     artifacts: list[Artifact],
-    history: list[Message] = None,
+    history: list[Message] | None = None,
 ) -> Task:
     if history is None:
         history = []

tests/utils/test_helpers.py

@@ -1,22 +1,25 @@
 from typing import Any
+
 import pytest
-from a2a.utils.helpers import (
-    create_task_obj,
-    append_artifact_to_task,
-    build_text_artifact,
-    validate,
-)
+
 from a2a.types import (
     Artifact,
-    MessageSendParams,
     Message,
+    MessageSendParams,
+    Part,
     Task,
     TaskArtifactUpdateEvent,
     TaskState,
     TextPart,
-    Part,
 )
 from a2a.utils.errors import ServerError
+from a2a.utils.helpers import (
+    append_artifact_to_task,
+    build_text_artifact,
+    create_task_obj,
+    validate,
+)
+
 
 # --- Helper Data ---
 TEXT_PART_DATA: dict[str, Any] = {'type': 'text', 'text': 'Hello'}

tests/utils/test_telemetry.py

@@ -1,13 +1,15 @@
-import pytest
 import asyncio
+
 from unittest import mock
-from a2a.utils.telemetry import trace_function, trace_class
+
+import pytest
+
+from a2a.utils.telemetry import trace_class, trace_function
 
 
 @pytest.fixture
 def mock_span():
-    span = mock.MagicMock()
-    return span
+    return mock.MagicMock()
 
 
 @pytest.fixture