class_docstr: Dataset used to parallelize the transformation of the dataset via a DataLoader
class_docstr_tok: ["Dataset","used","to","parallelize","the","transformation","of","the","dataset","via","a","DataLoader"]
code: def __getitem__(self, idx: int) -> bool:
      img = Image.fromarray(self.x[idx])
      label = self.y[idx][0][0]
      folder = os.path.join(
          self.output_path, "tumor" if label == 1 else "no_tumor"
      )
      img.save(os.path.join(folder, f"img_{idx}.jpg"))
      return True
  
file_path: vissl/extra_scripts/datasets/create_patch_camelyon_data_files.py
imports: import argparse
  import gzip
  import os
  from collections import OrderedDict
  from typing import NamedTuple
  from PIL import Image
  from torch.utils.data import DataLoader
  from tqdm import tqdm
  from vissl.utils.download import download_url
label_desc: Use image node_id 5 for calling the PatchCamelyon obj's underlying member method code with example usage: obj.__getitem__(idx) and returns: True