text: import sys
  import argparse
  from yolo import YOLO, detect_video
  from PIL import Image
  
  
  def detect_img(yolo):
      while True:
          img = input("Input image filename:")
          try:
              image = Image.open(img)
          except:
              print("Open Error! Try again!")
              continue
          else:
              r_image = yolo.detect_image(image)
              r_image.show()
      yolo.close_session()
  
  
  FLAGS = None
  
  if __name__ == "__main__":
      # class YOLO defines the default value, so suppress any default here
      parser = argparse.ArgumentParser(argument_default=argparse.SUPPRESS)
      """
      Command line options
      """
      parser.add_argument(
          "--model",
          type=str,
          help="path to model weight file, default " + YOLO.get_defaults("model_path"),
      )
  
      parser.add_argument(
          "--anchors",
          type=str,
          help="path to anchor definitions, default " + YOLO.get_defaults("anchors_path"),
      )
  
      parser.add_argument(
          "--classes",
          type=str,
          help="path to class definitions, default " + YOLO.get_defaults("classes_path"),
      )
  
      parser.add_argument(
          "--gpu_num",
          type=int,
          help="Number of GPU to use, default " + str(YOLO.get_defaults("gpu_num")),
      )
  
      parser.add_argument(
          "--image",
          default=False,
          action="store_true",
          help="Image detection mode, will ignore all positional arguments",
      )
      """
      Command line positional arguments -- for video detection mode
      """
      parser.add_argument(
          "--input",
          nargs="?",
          type=str,
          required=False,
          default="./path2your_video",
          help="Video input path",
      )
  
      parser.add_argument(
          "--output", nargs="?", type=str, default="", help="[Optional] Video output path"
      )
  
      FLAGS = parser.parse_args()
  
      if FLAGS.image:
          """
          Image detection mode, disregard any remaining command line arguments
          """
          print("Image detection mode")
          if "input" in FLAGS:
              print(
                  " Ignoring remaining command line arguments: "
                  + FLAGS.input
                  + ","
                  + FLAGS.output
              )
          detect_img(YOLO(**vars(FLAGS)))
      elif "input" in FLAGS:
          detect_video(YOLO(**vars(FLAGS)), FLAGS.input, FLAGS.output)
      else:
          print("Must specify at least video_input_path.  See usage with --help.")
  