code: def _generate_examples(self, file_id, extracted_dirs):
      
      filedir = os.path.join(extracted_dirs["img_align_celeba"],
                             "img_align_celeba")
      img_list_path = extracted_dirs["list_eval_partition"]
      landmarks_path = extracted_dirs["landmarks_celeba"]
      attr_path = extracted_dirs["list_attr_celeba"]
  
      with tf.io.gfile.GFile(img_list_path) as f:
        files = [
            line.split()[0]
            for line in f.readlines()
            if int(line.split()[1]) == file_id
        ]
  
      attributes = self._process_celeba_config_file(attr_path)
      landmarks = self._process_celeba_config_file(landmarks_path)
  
      for file_name in sorted(files):
        path = os.path.join(filedir, file_name)
  
        yield {
            "image": path,
            "landmarks": {
                k: v for k, v in zip(landmarks[0], landmarks[1][file_name])
            },
            "attributes": {
                # atributes value are either 1 or -1, so convert to bool
                k: v > 0 for k, v in zip(attributes[0], attributes[1][file_name])
            },
        }
docs: Yields examples.