code: def get_master_port(prior=None) -> Optional[int]:
      if prior is not None:
          return prior
      else:
          return _int_or_none(os.environ.get("MASTER_PORT"))
  
imports: import dataclasses
  import os
  import socket
  from typing import Optional
  import torch
  import torch.distributed
label_desc: Use image node_id 10 for calling a global function with example usage: get_master_port(prior) and returns: prior, _int_or_none