code: def parse_args():
      
  
      parser = get_parser()
  
      if len(sys.argv) < 2:
          parser.print_help()
          warnings.warn('Too few arguments!', UserWarning)
          parser.exit(1)
  
      # parsing
      try:
          params = parser.parse_args()
      except Exception as exc:
          print(exc)
          raise ValueError('Unable to parse command-line arguments.')
  
      in_features_path = os.path.abspath(params.in_features_path)
      if not os.path.exists(in_features_path):
          raise IOError("Given features file doesn't exist.")
  
      groups_path = os.path.abspath(params.groups_path)
      if not os.path.exists(groups_path):
          raise IOError("Given groups file doesn't exist.")
  
      return in_features_path, groups_path, params.weight_method, params.num_bins, params.edge_range, \
             params.trim_outliers, params.trim_percentile, params.return_networkx_graph, params.out_weights_path
docs: Parser/validator for the cmd line args.