code: def main():
      """Entrypoint from the command-line
  
      Loads kwargs from stdin,
      sets pipe to stdout
      """
      with os.fdopen(sys.stdin.fileno(), mode="rb") as f:
          kwargs = pickle.load(f)
      kwargs["pipe"] = sys.stdout
      KernelNanny.main(**kwargs)
  
imports: import asyncio
  import logging
  import os
  import pickle
  import signal
  import sys
  from subprocess import PIPE, Popen
  from threading import Thread
  import psutil
  import zmq
  from jupyter_client.session import Session
  from tornado.ioloop import IOLoop
  from traitlets.config import Config
  from zmq.eventloop.zmqstream import ZMQStream
  from ipyparallel import error, util
  from ipyparallel.util import local_logger
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types