def _clean_value(line1, line2):
    """Clean up attribute value for display."""
    _line1 = line1.strip()
    _line2 = line2.strip()
    if _line1[-1:] in ['{', '}', '(', ')', '[', ']', ';', ',']:
        _line1 += ' '
    return _line1 + _line2
