Python lxml.etree 模块，LXML_VERSION 实例源码

def egress(self, envelope, http_headers, operation, binding_options):
        """Apply the ws-addressing headers to the given envelope."""

        wsa_action = operation.input.abstract.wsa_action
        if not wsa_action:
            wsa_action = operation.soapaction

        header = get_or_create_header(envelope)
        headers = [
            WSA.Action(wsa_action),
            WSA.MessageID('urn:uuid:' + str(uuid.uuid4())),
            WSA.To(binding_options['address']),
        ]
        header.extend(headers)

        # the top_nsmap kwarg was added in lxml 3.5.0
        if etree.LXML_VERSION[:2] >= (3, 5):
            etree.cleanup_namespaces(
                header,
                keep_ns_prefixes=header.nsmap,
                top_nsmap=self.nsmap)
        else:
            etree.cleanup_namespaces(header)
        return envelope, http_headers

def check_library_versions(app_configs=None, **kwargs):
    from django import VERSION as DJANGO_VERSION
    from lxml.etree import LXML_VERSION
    from translate.__version__ import ver as ttk_version

    errors = []

    if DJANGO_VERSION < DJANGO_MINIMUM_REQUIRED_VERSION:
        errors.append(checks.Critical(
            _("Your version of Django is too old."),
            hint=_("Try pip install --upgrade 'Django==%s'",
                   _version_to_string(DJANGO_MINIMUM_REQUIRED_VERSION)),
            id="pootle.C002",
        ))

    if LXML_VERSION < LXML_MINIMUM_REQUIRED_VERSION:
        errors.append(checks.Warning(
            _("Your version of lxml is too old."),
            hint=_("Try pip install --upgrade lxml"),
            id="pootle.W003",
        ))

    if ttk_version < TTK_MINIMUM_REQUIRED_VERSION:
        errors.append(checks.Critical(
            _("Your version of Translate Toolkit is too old."),
            hint=_("Try pip install --upgrade translate-toolkit"),
            id="pootle.C003",
        ))

    return errors

def lxml_available():
    try:
        from lxml.etree import LXML_VERSION
        LXML = LXML_VERSION >= (3, 3, 1, 0)
        if not LXML:
            import warnings
            warnings.warn("The installed version of lxml is too old to be used with openpyxl")
            return False  # we have it, but too old
        else:
            return True  # we have it, and recent enough
    except ImportError:
        return False  # we don't even have it

def lxml_available():
    try:
        from lxml.etree import LXML_VERSION
        LXML = LXML_VERSION >= (3, 3, 1, 0)
        if not LXML:
            import warnings
            warnings.warn("The installed version of lxml is too old to be used with openpyxl")
            return False  # we have it, but too old
        else:
            return True  # we have it, and recent enough
    except ImportError:
        return False  # we don't even have it

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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"])
        from lxml import etree
        print "Found lxml version %s" % ".".join(map(str,etree.LXML_VERSION))

    if 'html5lib' in basic_parsers:
        import html5lib
        print "Found html5lib version %s" % html5lib.__version__

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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()
    elif os.path.exists(data):
        print('"%s" looks like a filename. Reading data from the file.' % data)
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print('"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data)
        print("You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup.")
        return
    print()

    for parser in basic_parsers:
        print("Trying to parse your markup with %s" % parser)
        success = False
        try:
            soup = BeautifulSoup(data, 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)

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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"])
        from lxml import etree
        print "Found lxml version %s" % ".".join(map(str,etree.LXML_VERSION))

    if 'html5lib' in basic_parsers:
        import html5lib
        print "Found html5lib version %s" % html5lib.__version__

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        with open(data) as fp:
            data = fp.read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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

def diagnose(data):
    """Diagnostic suite for isolating common problems."""
    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, 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, e:
            print (
                "html5lib is not installed or couldn't be imported.")

    if hasattr(data, 'read'):
        data = data.read()
    elif os.path.exists(data):
        print '"%s" looks like a filename. Reading data from the file.' % data
        data = open(data).read()
    elif data.startswith("http:") or data.startswith("https:"):
        print '"%s" looks like a URL. Beautiful Soup is not an HTTP client.' % data
        print "You need to use some other library to get the document behind the URL, and feed that document to Beautiful Soup."
        return
    print

    for parser in basic_parsers:
        print "Trying to parse your markup with %s" % parser
        success = False
        try:
            soup = BeautifulSoup(data, parser)
            success = True
        except Exception, 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