diff --git a/tests/unit/test_shared_ai_service.py b/tests/unit/test_shared_ai_service.py
index cfcb62810..f46002dbf 100755
--- a/tests/unit/test_shared_ai_service.py
+++ b/tests/unit/test_shared_ai_service.py
@@ -9,7 +9,6 @@ import json
 from unittest.mock import patch
 
 import pytest
-
 from shared.ai_service import (
     _call_ai_cover_service,
     _fallback_recommend_clips,
diff --git a/tests/unit/test_sticker_engine_pure.py b/tests/unit/test_sticker_engine_pure.py
index cc8c6f312..805d5ff58 100755
--- a/tests/unit/test_sticker_engine_pure.py
+++ b/tests/unit/test_sticker_engine_pure.py
@@ -1,27 +1,27 @@
 """sticker_engine_pure 单元测试."""
 
 from apps.worker.video_processing.sticker_engine_pure import (
-    safe_float,
-    safe_int,
-    safe_bool,
-    estimate_sticker_size,
-    estimate_text_size,
-    calculate_fade_out_start,
-    calculate_end_time,
-    has_time_range,
-    build_scale_filter,
-    build_opacity_filter,
-    build_image_fade_filters,
-    build_enable_expr,
-    escape_drawtext_text,
     build_drawtext_alpha_expr,
-    build_stroke_params,
-    build_shadow_params,
-    sort_stickers_by_z_index,
-    filter_enabled_stickers,
-    count_sticker_types,
+    build_enable_expr,
+    build_image_fade_filters,
+    build_opacity_filter,
     build_overlay_position,
     build_pre_filter_label,
+    build_scale_filter,
+    build_shadow_params,
+    build_stroke_params,
+    calculate_end_time,
+    calculate_fade_out_start,
+    count_sticker_types,
+    escape_drawtext_text,
+    estimate_sticker_size,
+    estimate_text_size,
+    filter_enabled_stickers,
+    has_time_range,
+    safe_bool,
+    safe_float,
+    safe_int,
+    sort_stickers_by_z_index,
     validate_image_sticker,
     validate_text_sticker,
 )