How to use the rdmo.domain.models.Attribute.objects.get function in rdmo

def import_condition(element):
    try:
        condition = Condition.objects.get(uri=element['uri'])
    except Condition.DoesNotExist:
        log.info('Condition not in db. Created with uri %s.', element['uri'])
        condition = Condition()

    condition.uri_prefix = element['uri_prefix'] or ''
    condition.key = element['key'] or ''
    condition.comment = element['comment'] or ''

    condition.source = None
    if element['source']:
        try:
            condition.source = Attribute.objects.get(uri=element['source'])
        except Attribute.DoesNotExist:
            pass

    condition.relation = element['relation']
    condition.target_text = element['target_text'] or ''

    condition.target_option = None
    if element['target_option']:
        try:
            condition.target_option = Option.objects.get(uri=element['target_option'])
        except Option.DoesNotExist:
            pass

    try:
        ConditionUniqueKeyValidator(condition).validate()
    except ValidationError as e:

log.info('QuestionSet not in db. Created with uri %s.', element['uri'])
        questionset = QuestionSet()

    try:
        questionset.section = Section.objects.get(uri=element['section'])
    except Section.DoesNotExist:
        log.info('Section not in db. Skipping.')
        return

    questionset.uri_prefix = element['uri_prefix'] or ''
    questionset.key = element['key'] or ''
    questionset.comment = element['comment'] or ''

    if element['attribute']:
        try:
            questionset.attribute = Attribute.objects.get(uri=element['attribute'])
        except Attribute.DoesNotExist:
            pass

    questionset.is_collection = element['is_collection']
    questionset.order = element['order']

    for lang_code, lang_string, lang_field in get_languages():
        set_lang_field(questionset, 'title', element, lang_code, lang_field)
        set_lang_field(questionset, 'help', element, lang_code, lang_field)
        set_lang_field(questionset, 'verbose_name', element, lang_code, lang_field)
        set_lang_field(questionset, 'verbose_name_plural', element, lang_code, lang_field)

    try:
        QuestionSetUniquePathValidator(questionset).validate()
    except ValidationError as e:
        log.info('QuestionSet not saving "%s" due to validation error (%s).', element['uri'], e)

task = Task.objects.get(uri=element['uri'])
    except Task.DoesNotExist:
        log.info('Task not in db. Created with uri %s.', element['uri'])
        task = Task()

    task.uri_prefix = element['uri_prefix'] or ''
    task.key = element['key'] or ''
    task.comment = element['comment'] or ''

    for lang_code, lang_string, lang_field in get_languages():
        set_lang_field(task, 'title', element, lang_code, lang_field)
        set_lang_field(task, 'text', element, lang_code, lang_field)

    if element['start_attribute']:
        try:
            task.start_attribute = Attribute.objects.get(uri=element['start_attribute'])
        except Attribute.DoesNotExist:
            pass

    if element['end_attribute']:
        try:
            task.end_attribute = Attribute.objects.get(uri=element['end_attribute'])
        except Attribute.DoesNotExist:
            pass

    task.days_before = element['days_before']
    task.days_after = element['days_after']

    try:
        TaskUniqueKeyValidator(task).validate()
    except ValidationError as e:
        log.info('Task not saving "%s" due to validation error (%s).', element['uri'], e)