code: def query_random(num=6, kind='1'):
          '''
          Query wikis randomly.
          '''
          return TabWiki.select().where(
              TabWiki.kind == kind
          ).order_by(
              peewee.fn.Random()
          ).limit(numf query_random(num=6, kind='1'):
          '''
          Query wikis randomly.
          '''
          return TabWiki.select().where(
              TabWiki.kind == kind
          ).order_by(
              peewee.fn.Random()
          ).limit(num)
docs: Query wikis randomly.