code: def qset(self, name, index, value):
          
          index = get_integer('index', index)        
          return self.execute_command('qset', name, index, value)
docs: Set the list element at ``index`` to ``value``. 
  
          :param string name: the queue name
          :param int index: the specified index, can < 0
          :param string value: the element value
          :return: Unknown
          :rtype: True