diff --git a/src/agents/common/toolkits/buildin/__init__.py b/src/agents/common/toolkits/buildin/__init__.py
index 7459ccc3..cccfce3c 100644
--- a/src/agents/common/toolkits/buildin/__init__.py
+++ b/src/agents/common/toolkits/buildin/__init__.py
@@ -1,5 +1,5 @@
 # buildin 工具包
-from .tools import calculator, query_knowledge_graph, text_to_img_qwen_image, ask_user_question
+from .tools import ask_user_question, calculator, query_knowledge_graph, text_to_img_qwen_image
 
 __all__ = [
     "ask_user_question",
diff --git a/test/test_graph_unit.py b/test/test_graph_unit.py
index f2fb6af0..b051f4d0 100644
--- a/test/test_graph_unit.py
+++ b/test/test_graph_unit.py
@@ -104,4 +104,4 @@ async def test_txt_add_vector_entity_parsing():
             assert call2["r_type"] == "LIKES"
             assert call2["r_props"] == {"weight": 0.8}
 
-            print("Verification passed!")
\ No newline at end of file
+            print("Verification passed!")
diff --git a/test/test_skill_service.py b/test/test_skill_service.py
index c264c310..7b60d697 100644
--- a/test/test_skill_service.py
+++ b/test/test_skill_service.py
@@ -279,4 +279,4 @@ async def test_update_skill_dependencies(monkeypatch: pytest.MonkeyPatch):
     assert captured["mcp_dependencies"] == ["mcp-a"]
     assert captured["skill_dependencies"] == ["beta"]
     assert captured["updated_by"] == "root"
-    assert updated.skill_dependencies == ["beta"]
\ No newline at end of file
+    assert updated.skill_dependencies == ["beta"]
diff --git a/test/test_skills_backend.py b/test/test_skills_backend.py
index 26375cab..dd17ee19 100644
--- a/test/test_skills_backend.py
+++ b/test/test_skills_backend.py
@@ -42,4 +42,4 @@ def test_selected_skills_backend_readonly_and_visible_only_selected(tmp_path, mo
 
     upload_result = backend.upload_files([("/alpha/a.txt", b"a")])
     assert len(upload_result) == 1
-    assert upload_result[0].error == "permission_denied"
\ No newline at end of file
+    assert upload_result[0].error == "permission_denied"