def get_wikipedia_urls(self):
    """Return a list of all wikipedia urls in this database.

    Returns:
      A list of wikipedia url strings in db
    """
    wiki_rows: List[Tuple[Text]] = self.session.query(
        WikiPage.wikipedia_url).all()
    return [row[0] for row in wiki_rows]
Return a list of all wikipedia urls in this database.

    Returns:
      A list of wikipedia url strings in db
    
language/serene/wiki_db.py