code: def get_help_width():
    
    if not sys.stdout.isatty() or termios is None or fcntl is None:
      return _DEFAULT_HELP_WIDTH
    try:
      data = fcntl.ioctl(sys.stdout, termios.TIOCGWINSZ, '1234')
      columns = struct.unpack('hh', data)[1]
      # Emacs mode returns 0.
      # Here we assume that any value below 40 is unreasonable.
      if columns >= _MIN_HELP_WIDTH:
        return columns
      # Returning an int as default is fine, int(int) just return the int.
      return int(os.getenv('COLUMNS', _DEFAULT_HELP_WIDTH))
  
    except (TypeError, IOError, struct.error):
      return _DEFAULT_HELP_WIDTH
docs: Returns the integer width of help lines that is used in TextWrap.