code: def get_world_size():
      if not is_dist_avail_and_initialized():
          return 1
      return dist.get_world_size()
  
file_path: deep-learning-for-image-processing/pytorch_classification/mini_imagenet/multi_train_utils/distributed_utils.py
imports: import os
  import torch
  import torch.distributed
label_desc: Use image node_id 4 for calling a global function with example usage: get_world_size() and returns: dist, int