code: def get_world_size() -> int:
      if dist.is_initialized():
          return dist.get_world_size()
      return 1
  
imports: from time import time
  from typing import Optional
  import torch
  import torch.distributed
  from coati.experience_maker import Experience
  from .base import MakerCallback, TrainerCallback
label_desc: Use image node_id 1 for calling a global function with example usage: get_world_size() and returns: int, dist