code: def main():
      argparser = argparse.ArgumentParser(
          description="Serve studio model"
      )
  
      argparser.add_argument(
          "--wrapper",
          "-w",
          help="python script with function create_model "
          + "that takes modeldir "
          "(that is, directory where experiment saves "
          + "the checkpoints etc)"
          + "and returns dict -> dict function (model)."
          + "By default, studio-serve will try to determine "
          + "this function automatically.",
          default=None,
      )
  
      argparser.add_argument(
          "--port",
          help="port to run Flask server on",
          type=int,
          default=5000,
      )
  
      argparser.add_argument(
          "--host", help="host name.", default="0.0.0.0"
      )
  
      argparser.add_argument(
          "--killafter",
          help="Shut down after this many seconds of inactivity",
          default=3600,
      )
  
      options = argparser.parse_args(sys.argv[1:])
  
      global model
  
      modeldir = fs_tracker.get_artifact("modeldata")
      if options.wrapper:
          module_name = re.sub(".py\Z", "", options.wrapper)
          wrapper_module = importlib.import_module(module_name)
          model = wrapper_module.create_model(modeldir)
      else:
          model = auto_generate_model(modeldir)
  
      restart_killtimer(int(options.killafter))
      app.run(host=options.host, port=options.port)
  
imports: import argparse
  import sys
  import os
  import time
  import json
  import glob
  import traceback
  import importlib
  import pickle
  import re
  import threading
  from flask import Flask, request
  from studio import fs_tracker, logs
  from .model_util import ModelPipe
label_desc: Use image node_id 4 for calling a global function with example usage: main() without return types