def METHOD_NAME(data):
    """Diagnostic suite for isolating common problems.
    :param data: A string containing markup that needs to be explained.
    :return: None; diagnostics are printed to standard output.
    """
    print(("Diagnostic running on Beautiful Soup %s" % __version__))
    print(("Python version %s" % sys.version))
    basic_parsers = ["html.parser", "html5lib", "lxml"]
    for name in basic_parsers:
        for builder in builder_registry.builders:
            if name in builder.features:
                break
        else:
            basic_parsers.remove(name)
            print((
                "I noticed that %s is not installed. Installing it may help." %
                name))
    if 'lxml' in basic_parsers:
        basic_parsers.append("lxml-xml")
        try:
            from lxml import etree
            print(("Found lxml version %s" % ".".join(map(str,etree.LXML_VERSION))))
        except ImportError as e:
            print(
                "lxml is not installed or couldn't be imported.")
    if 'html5lib' in basic_parsers:
        try:
            import html5lib
            print(("Found html5lib version %s" % html5lib.__version__))
        except ImportError as e:
            print(
                "html5lib is not installed or couldn't be imported.")
    if hasattr(data, 'read'):
        data = data.read()
    for parser in basic_parsers:
        print(("Trying to parse your markup with %s" % parser))
        success = False
        try:
            soup = BeautifulSoup(data, features=parser)
            success = True
        except Exception as e:
            print(("%s could not parse the markup." % parser))
            traceback.print_exc()
        if success:
            print(("Here's what %s did with the markup:" % parser))
            print((soup.prettify()))
        print(("-" * 80))