code: def parse_args():
      import argparse
  
      parser = argparse.ArgumentParser(
          description="args for hub serving"
      )
      parser.add_argument("--server_url", type=str, required=True)
      parser.add_argument("--image_dir", type=str, required=True)
      parser.add_argument("--visualize", type=str2bool, default=False)
      parser.add_argument(
          "--output", type=str, default="./hubserving_result"
      )
      args = parser.parse_args()
      return args
  
file_path: PaddleOCR/tools/test_hubserving.py
imports: import os
  import sys
  from ppocr.utils.logging import get_logger
  import cv2
  import numpy
  import time
  from PIL import Image
  from ppocr.utils.utility import get_image_file_list
  from tools.infer.utility import draw_ocr, draw_boxes, str2bool
  from ppstructure.utility import draw_structure_result
  from ppstructure.predict_system import to_excel
  import requests
  import json
  import base64
label_desc: Use image node_id 5 for calling a global function with example usage: parse_args() and returns: args