How to use the internetarchive.get_files function in internetarchive

links = Link.objects.filter(internet_archive_upload_status="completed", creation_timestamp__range=(start_date, end_date))

    guid_results = dict()
    all_results = dict()

    c = {"s3":{"access":settings.INTERNET_ARCHIVE_ACCESS_KEY, "secret":settings.INTERNET_ARCHIVE_SECRET_KEY}}
    internetarchive.get_session(config=c)

    for link in links:
        identifier = settings.INTERNET_ARCHIVE_IDENTIFIER_PREFIX + link.guid
        item = internetarchive.get_item(identifier)
        warc_name = "%s.warc.gz" % link.guid

        try:
            fnames = [f.name for f in internetarchive.get_files(identifier, glob_pattern="*gz")]
            guid_results["uploaded_file"] = warc_name in fnames
            if settings.INTERNET_ARCHIVE_COLLECTION == 'test_collection':
                guid_results["collection"] = item.metadata["collection"] == settings.INTERNET_ARCHIVE_COLLECTION
            else:
                guid_results["collection"] = item.metadata["collection"][0] == settings.INTERNET_ARCHIVE_COLLECTION
            guid_results["title"] = item.metadata["title"] == "%s: %s" % (link.guid, truncatechars(link.submitted_title, 50))
            guid_results["mediatype"] = item.metadata["mediatype"]=="web"
            guid_results["description"] = item.metadata["description"]=="Perma.cc archive of %s created on %s." % (link.submitted_url, link.creation_timestamp,)
            guid_results["contributor"] = item.metadata["contributor"]=="Perma.cc"
            guid_results["submitted_url"] = item.metadata["submitted_url"]==link.submitted_url
            guid_results["perma_url"] = item.metadata["perma_url"]=="http://%s/%s" % (settings.HOST, link.guid)
            guid_results["external-identifier"] = item.metadata["external-identifier"]=="urn:X-perma:%s" % link.guid
            if link.organization:
                guid_results["organization"] = item.metadata["sponsor"] == "%s - %s" % (link.organization, link.organization.registrar)

        except Exception as e: