diff --git a/tests/unit/test_extract_from_douyin_errors.py b/tests/unit/test_extract_from_douyin_errors.py
index 11d3d6f2b..6125b956e 100644
--- a/tests/unit/test_extract_from_douyin_errors.py
+++ b/tests/unit/test_extract_from_douyin_errors.py
@@ -244,7 +244,9 @@ def test_cookies_error_returns_503_friendly_message(fake_user):
         with pytest.raises(HTTPException) as exc:
             scripts_ai.extract_from_douyin(request=body, current_user=fake_user, db=mock.MagicMock())
         assert exc.value.status_code == status.HTTP_503_SERVICE_UNAVAILABLE, f"应为503，实际 {exc.value.status_code}"
-        assert "暂时不可用" in exc.value.detail or "稍后重试" in exc.value.detail, f"应有友好提示，实际: {exc.value.detail}"
+        assert (
+            "暂时不可用" in exc.value.detail or "稍后重试" in exc.value.detail
+        ), f"应有友好提示，实际: {exc.value.detail}"
         # 确认不暴露 yt-dlp 原始错误
         assert "Fresh cookies" not in exc.value.detail
 
diff --git a/tests/unit/test_subscription_routes_legacy.py b/tests/unit/test_subscription_routes_legacy.py
index aac772146..ffcb325a4 100644
--- a/tests/unit/test_subscription_routes_legacy.py
+++ b/tests/unit/test_subscription_routes_legacy.py
@@ -181,5 +181,6 @@ class TestBuildSubscriptionInfoEdgeCases:
         assert info.created_at  # 非空
         # 应为 ISO 格式字符串
         from datetime import datetime
+
         # 能解析即通过
         datetime.fromisoformat(info.created_at)