code: def find_free_port() -> int:
      """
      Find a free port we can bind to locally.
  
      Credit: https://stackoverflow.com/questions/1365265/on-localhost-how-do-i-pick-a-free-port-number
      """
      with contextlib.closing(
          socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      ) as s:
          s.bind(("", 0))
          s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
          return s.getsockname()[1]
  
file_path: ParlAI/parlai/utils/distributed.py
imports: import builtins
  import copy
  import os
  import pickle
  import contextlib
  import subprocess
  import socket
  import parlai.utils.logging
label_desc: Use image node_id 12 for calling a global function with example usage: find_free_port() and returns: s