code: def __getitem__(self, i):
      f = self.files[i]
      img = np.array(PIL.Image.open(f).resize((64, 64))) / np.float32(
          255
      )
      img = np.fliplr(img) if np.random.random() < 0.5 else img
      return img
  
file_path: elegy/examples/need-fixing/WGAN-GP/main.py
imports: import glob
  import os
  import pickle
  import numpy
  import PIL.Image
  from absl import app, flags
  from model import WGAN_GP
  import elegy
label_desc: Use image node_id 3 for calling the Dataset obj's underlying member method code with example usage: obj.__getitem__(i) and returns: img