class_docstr: ### MNIST dataset
class_docstr_tok: ["#","#","#","MNIST","dataset"]
code: def __getitem__(self, item):
      return super().__getitem__(item)[0]
  
imports: from typing import List
  import torch
  import torch.utils.data
  import torchvision
  from PIL import Image
  from labml import lab, tracker, experiment, monit
  from labml.configs import BaseConfigs, option
  from labml_helpers.device import DeviceConfigs
  from labml_nn.diffusion.ddpm import DenoiseDiffusion
  from labml_nn.diffusion.ddpm.unet import UNet
label_desc: Use image node_id 2 for calling the MNISTDataset obj's underlying member method code with example usage: obj.__getitem__(item) and returns: super