code: def __getitem__(self, index) -> Tuple[Image.Image, bool]:
      if self._iterator is None:
          self._iterator = self._open_iterator()
  
      if not self.queue_init and self.enable_queue_dataset:
          self._init_queues()
  
      try:
          # TODO (wpc, prigoyal): we should check images are good when we are
          # uploading them to airstore.
          ImageFile.LOAD_TRUNCATED_IMAGES = True
  
          image_bytes = next(self._iterator)["image"]
          img = Image.open(io.BytesIO(image_bytes))
  
          if img.mode != "RGB":
              img = img.convert("RGB")
  
          if self.enable_queue_dataset:
              self.on_sucess(img)
          is_success = True
      except Exception as e:
          # TODO: airstore should have no failed images
          #       because they are filtered at prepare time.
          #       Then, this should be removed.
          logging.warning(e)
          is_success = False
          # if we have queue dataset class enabled, we try to use it to get
          # the seen valid images
          if self.enable_queue_dataset:
              img, is_success = self.on_failure()
              if img is None:
                  raise RuntimeError(
                      "Encountered invalid image and couldn't load from QueueDataset"
                  )
          else:
              img = get_mean_image(
                  self.cfg["DATA"][self.split].DEFAULT_GRAY_IMG_SIZE
              )
      return img, is_success
  
file_path: vissl/vissl/data/airstore_dataset.py
imports: import io
  import logging
  from typing import Any, Iterable, Tuple
  import torch
  from classy_vision.generic.distributed_util import get_rank, get_world_size
  from iopath.common.file_io import PathManager
  from PIL import Image, ImageFile
  from vissl.config import AttrDict
  from vissl.data.data_helper import get_mean_image, QueueDataset
label_desc: Use image node_id 8 for calling the AirstoreDataset obj's underlying member method code with example usage: obj.__getitem__(index) and returns: img,  is_success