def update(self, url_list):
    '\n        update this urlfilter using url_list\n        '
    if (self._url_set is not None):
        self._url_set.update(url_list)
    else:
        for url in url_list:
            self._bloom_filter.add(url)
    return
update this urlfilter using url_list
def update(self, url_list):
    '\n        \n        '
    if (self._url_set is not None):
        self._url_set.update(url_list)
    else:
        for url in url_list:
            self._bloom_filter.add(url)
    return