code: def update_cnt(uid, post_data):
          '''
          Update the content by ID.
          '''
          entry = TabPostHist.update(
              user_name=post_data['user_name'],
              cnt_md=tornado.escape.xhtml_escape(post_data['cnt_md']),
              time_update=tools.timestamp(),
          ).where(TabPostHist.uid == uid)
          entry.execute(f update_cnt(uid, post_data):
          '''
          Update the content by ID.
          '''
          entry = TabPostHist.update(
              user_name=post_data['user_name'],
              cnt_md=tornado.escape.xhtml_escape(post_data['cnt_md']),
              time_update=tools.timestamp(),
          ).where(TabPostHist.uid == uid)
          entry.execute()
docs: Update the content by ID.