added ruff code reivew

examples/two_sensor_pipeline.py

@@ -20,14 +20,17 @@
 
 """
 import os
+
 os.environ["OPENCV_VIDEOIO_MSMF_ENABLE_HW_TRANSFORMS"] = "0" 
-import cv2
-import orisys
-import numpy as np
-import multiprocessing as mp
-from multiprocessing import Queue, Process
-import time
 import argparse
+import multiprocessing as mp
+import queue
+import time
+from multiprocessing import Process, Queue
+
+import cv2
+
+import orisys
 
 
 def sensor_worker(sensor_id, vid_src, config_name, result_queue, stop_event, target_fps=None):
@@ -55,6 +58,7 @@ def sensor_worker(sensor_id, vid_src, config_name, result_queue, stop_event, tar
         print(f"传感器 {sensor_id} 已启动" + (f"（目标帧率：{target_fps} FPS）" if target_fps else ""))
 
         frame_interval = 1.0 / target_fps if target_fps and target_fps > 0 else 0.0
+        dropped_frames = 0
 
         while not stop_event.is_set():
             t_start = time.perf_counter()
@@ -95,9 +99,10 @@ def sensor_worker(sensor_id, vid_src, config_name, result_queue, stop_event, tar
                 # 步骤 6：将结果发送到主进程（非阻塞）
                 try:
                     result_queue.put_nowait(data)
-                except Exception:
-                    # 如果队列已满，则丢弃当前帧，避免阻塞工作进程
-                    pass
+                except queue.Full:
+                    # 队列已满：丢弃当前帧，避免阻塞工作进程。这是有意的背压策略，
+                    # 但丢帧必须可观测，否则主进程看到的低帧率无从解释。
+                    dropped_frames += 1
 
             except Exception as e:
                 print(f"传感器 {sensor_id} 处理失败：{e}")
@@ -112,7 +117,13 @@ def sensor_worker(sensor_id, vid_src, config_name, result_queue, stop_event, tar
         
         # 释放资源
         sensor.disconnect()
-        print(f"传感器 {sensor_id} 已停止。")
+        if dropped_frames:
+            print(
+                f"传感器 {sensor_id} 已停止（因结果队列已满丢弃 {dropped_frames} 帧，"
+                "主进程处理慢于采集）。"
+            )
+        else:
+            print(f"传感器 {sensor_id} 已停止。")
         
     except Exception as e:
         print(f"传感器 {sensor_id} 初始化失败：{e}")
@@ -193,7 +204,8 @@ def main():
                 while True:
                     try:
                         data = queue.get_nowait()
-                    except:
+                    except queue.Empty:
+                        # 队列已排空：正常结束内层循环，不是错误。
                         break
                 
                 if data is not None: