code: def __getitem__(self, item):
      return self.input_seq[item], self.output_seq[item]
  
imports: import logging
  import os
  import random
  import time
  import urllib.request
  from typing import Optional, Sequence, Tuple
  import torch
  from torch import Tensor
  from torch.utils.data import Dataset
label_desc: Use image node_id 3 for calling the AverageDataset obj's underlying member method code with example usage: obj.__getitem__(item) and returns: self,  self