How to use the idutils.is_arxiv_post_2007 function in idutils

def _normalize_arxiv(obj):
    """Return a normalized arXiv identfier.

    As in ``_is_arxiv``, we need to handle arXiv references as well
    as arXiv identifiers. We also need to return a simpler arXiv
    identifier than what ``idutils`` would output, so we use some
    of its helpers instead of ``normalize_arxiv``.
    """
    obj = obj.split()[0]

    m = idutils.is_arxiv_pre_2007(obj)
    if m:
        return ''.join(m.group(2, 4, 5))

    m = idutils.is_arxiv_post_2007(obj)
    if m:
        return '.'.join(m.group(2, 3))

def arxiv_id(self, key, value):
    from idutils import is_arxiv_post_2007

    if is_arxiv_post_2007(value):
        arxiv_rep_number = {'value': 'arXiv:' + value}
    else:
        arxiv_rep_number = {'value': value}
    if len(value.split('/')) == 2:
        arxiv_rep_number['categories'] = value.split('/')[0]
    if 'arxiv_eprints' in self:
        self['arxiv_eprints'].append(arxiv_rep_number)
    else:
        self['arxiv_eprints'] = [arxiv_rep_number]

def arxiv_id(self, key, value):
    if is_arxiv_post_2007(value):
        arxiv_rep_number = {'value': 'arXiv:' + value}
    else:
        arxiv_rep_number = {'value': value}
    if len(value.split('/')) == 2:
        arxiv_rep_number['categories'] = value.split('/')[0]
    if 'arxiv_eprints' in self:
        self['arxiv_eprints'].append(arxiv_rep_number)
    else:
        self['arxiv_eprints'] = [arxiv_rep_number]
    raise IgnoreKey

def get_primary_class(data, doc_type):
    eprint = get_value(data, 'arxiv_eprints.value[0]')
    if eprint and is_arxiv_post_2007(eprint):
        return get_value(data, 'arxiv_eprints[0].categories[0]')

def curation_ticket_context(user, obj):
    recid = obj.extra_data.get('recid')
    record_url = obj.extra_data.get('url')
    server_name = current_app.config['SERVER_NAME']
    legacy_url = current_app.config['LEGACY_BASE_URL']

    arxiv_ids = get_value(obj.data, 'arxiv_eprints.value') or []
    for index, arxiv_id in enumerate(arxiv_ids):
        if arxiv_id and is_arxiv_post_2007(arxiv_id):
            arxiv_ids[index] = 'arXiv:{0}'.format(arxiv_id)

    report_numbers = get_value(obj.data, 'report_numbers.value') or []
    dois = [
        "doi:{0}".format(doi)
        for doi in get_value(obj.data, 'dois.value') or []
    ]
    link_to_pdf = obj.extra_data.get('formdata', {}).get('url')

    subject = ' '.join(filter(
        lambda x: x is not None,
        arxiv_ids + dois + report_numbers + ['(#{0})'.format(recid)]
    ))

    references = obj.extra_data.get('formdata', {}).get('references')
    user_comment = obj.extra_data.get('formdata', {}).get('extra_comments', '')

def get_curation_body(template, metadata, email, extra_data):
    """
    Get ticket content.

    Ticket used by curators to curate the given record.
    """
    from idutils import is_arxiv_post_2007

    recid = extra_data.get('recid')
    record_url = extra_data.get('url')

    arxiv_id = metadata.get('arxiv_id')
    if arxiv_id and is_arxiv_post_2007(arxiv_id):
        arxiv_id = ''.join(['arXiv:', arxiv_id])

    report_number = metadata.get('report_numbers')
    if report_number:
        report_number = report_number[0].get('value')

    link_to_pdf = extra_data.get('submission_data').get('pdf')

    subject = ' '.join(filter(lambda x: x is not None,
                       [arxiv_id,
                        " ".join(["doi:{0}".format(d) for d in metadata.get('dois')]),
                        report_number,
                        '(#{0})'.format(recid)]))

    references = extra_data.get('submission_data').get('references')
    user_comment = extra_data.get('submission_data').get('extra_comments')