code: def is_main_process():
      return get_rank() == 0
  
imports: from collections import defaultdict, deque
  import datetime
  import pickle
  import time
  import errno
  import os
  from contextlib import contextmanager
  import torch
  import torch.distributed
label_desc: Use image node_id 9 for calling a global function with example usage: is_main_process() and returns: unknown