new_contents: """A script for parsing the Alov bounding box `.ann` files."""
  
  import sys
  import os
  import itertools
  import pandas as pd
  import xml.etree.ElementTree as ET 
  
  
  if __name__ == '__main__': 
      bbox_dir = sys.argv[1]
      output_filepath = sys.argv[2]
      ann_files_by_dir = (i[2] for i in os.walk(bbox_dir))
      bbox_ann_filenames = itertools.chain(*ann_files_by_dir)
  
      end_lst = []
      for filename in bbox_xml_filenames: 
          end_lst.extend(parse_file(bbox_dir, filename))
  
  
subject: Initialize alov parsing code with main block