code: def argsparser():
      parser = argparse.ArgumentParser(description=__doc__)
      parser.add_argument(
          "--video_file",
          type=str,
          default=None,
          help="Path of video file, `video_file` or `camera_id` has a highest priority.",
      )
      parser.add_argument(
          "--region_polygon",
          nargs="+",
          type=int,
          default=[],
          help="Clockwise point coords (x0,y0,x1,y1...) of polygon of area when "
          "do_break_in_counting. Note that only support single-class MOT and "
          "the video should be taken by a static camera.",
      )
      return parser
  
imports: import os
  import sys
  import cv2
  import numpy
  import argparse
label_desc: Use image node_id 1 for calling a global function with example usage: argsparser() and returns: parser