diff --git a/apps/worker/video_processing/dedup.py b/apps/worker/video_processing/dedup.py
index c90fa926d..3cc3468ab 100755
--- a/apps/worker/video_processing/dedup.py
+++ b/apps/worker/video_processing/dedup.py
@@ -353,7 +353,7 @@ def find_duplicate_segments(
     run_start = None
     gap_count = 0
 
-    for i, (is_match, dist, idx) in enumerate(frame_matches):
+    for i, (is_match, _dist, _idx) in enumerate(frame_matches):
         if is_match:
             if run_start is None:
                 run_start = i
@@ -531,7 +531,7 @@ class VideoDeduplicator:
         min_len = min(len(hist_a), len(hist_b))
         a = hist_a[:min_len]
         b = hist_b[:min_len]
-        return float(sum(np.sqrt(ai * bi) for ai, bi in zip(a, b)))
+        return float(sum(np.sqrt(ai * bi) for ai, bi in zip(a, b, strict=False)))
 
     @staticmethod
     def _compute_histogram_similarity(
diff --git a/tests/unit/test_cross_video_avoidance.py b/tests/unit/test_cross_video_avoidance.py
index 316e105ee..dac04378f 100644
--- a/tests/unit/test_cross_video_avoidance.py
+++ b/tests/unit/test_cross_video_avoidance.py
@@ -221,7 +221,6 @@ class TestServiceLayerIntegration:
 
     def _make_service(self, clip_repo_mock, asset_repo_mock=None):
         """创建 PlanGeneratorService 并注入 mock repos."""
-        from unittest.mock import MagicMock, patch
 
         from apps.api.app.services.plan_generator_service import PlanGeneratorService