code: def get_free_port():
      with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
          s.bind(("", 0))
          return s.getsockname()[1]
  
file_path: ColossalAI/applications/Chat/benchmarks/ray/1mmt_dummy.py
imports: import argparse
  import os
  import socket
  from functools import partial
  import ray
  import torch
  from coati.quant import llama_load_quant, low_resource_init
  from coati.ray.detached_trainer_ppo import DetachedPPOTrainer
  from coati.ray.experience_maker_holder import ExperienceMakerHolder
  from coati.ray.utils import get_actor_from_args, get_critic_from_args, get_receivers_per_sender, get_reward_model_from_args, get_strategy_from_args
  from torch.utils.data import DataLoader
  from transformers import AutoConfig, AutoTokenizer
  from transformers.modeling_utils import no_init_weights
label_desc: Use image node_id 1 for calling a global function with example usage: get_free_port() and returns: s