code: def get_label_map(data_dir):
      CLASS_NAMES = load_class_desc(data_dir)
      label_map = {i: v for i, v in enumerate(CLASS_NAMES.values())}
      return label_map
  
file_path: robustness/robustness/tools/openimgs_helpers.py
imports: import os
  import csv
  import numpy
  import torch
  import torch.utils.data
  import robustness.data_augmentation
  from robustness import imagenet_models
  from .folder import default_loader, IMG_EXTENSIONS
label_desc: Use image node_id 4 for calling a global function with example usage: get_label_map(data_dir) and returns: label_map