Merge pull request 'Hotfix/mems cam open' (#20) from hotfix/mems_cam_open into dev

Reviewed-on: #20

examples/basic_pipeline.py

@@ -28,12 +28,9 @@ def main():
     # cal_path 为标定文件路径；每台设备建议使用独立的标定文件
 
     # 输入既可以是摄像头编号，也可以是视频文件路径
-    try:
-        input = int(args.video)
-        is_camera = True
-        sensor = orisys.Sensor(input, config_name=args.config, verbose=args.verbose)
-    except:
-        is_camera = False
+    if args.video.isdigit():
+        sensor = orisys.Sensor(int(args.video), config_name=args.config, verbose=args.verbose)
+    else:
         sensor = orisys.Sensor(args.video, config_name=args.config, verbose=args.verbose)
 
     print("\n按键说明：'q' 退出程序，'r' 重置追踪器。")