docs: def __read_file(usr_path, file_type):
      """
      Universal read file. Given a path and a type, it will do the appropriate read actions
  
      :param str usr_path: Path to file
      :param str file_type: One of approved file types: xls, xlsx, txt, lpd
      :return none:
      """
      global files
  
      # no path provided. start gui browse
      if not usr_path:
          # src files could be a list of one, or a list of many. depending how many files the user selects
          src_dir, src_files = get_src_or_dst("read", "file")
          # check if src_files is a list of multiple files
          if src_files:
              for file_path in src_files:
                  __universal_read(file_path, file_type)
          else:
              print("No file(s) chosen")
      else:
          __universal_read(usr_path, file_type)
  
      return