code: def add_reporting_args(parser):
      
      g = parser.add_argument_group('Reporting options')
  
      g.add_argument(
          '-l', '--log-file', default=None,
          type=str, metavar=file_mv,
          help='Path of log file (if specified, report to stdout AND file.'
      )
  
      g.add_argument('-q', '--quiet', action='store_true',
                     help='Only output errors and warnings.')
  
      g.add_argument(
          '-v', '--verbose', action='store_true',
          help='Enable verbose output. Ignored if --quiet is specified.'
      )
  
      return g
docs: Add reporting arguments to an argument parser.
  
      Parameters
      ----------
      parser: `argparse.ArgumentParser`
  
      Returns
      -------
      `argparse.ArgumentGroup`
          The argument group created.