code: def select_random_ports(n):
      """Select and return n random ports that are available."""
      ports = []
      sockets = []
      for i in range(n):
          sock = socket.socket()
          sock.bind(("", 0))
          ports.append(sock.getsockname()[1])
          sockets.append(sock)
      for sock in sockets:
          sock.close()
      return ports
  
file_path: catboost/contrib/python/pyzmq/py3/zmq/ssh/tunnel.py
imports: import atexit
  import os
  import re
  import signal
  import socket
  import sys
  import warnings
  from getpass import getpass, getuser
  from multiprocessing import Process
label_desc: Use image node_id 1 for calling a global function with example usage: select_random_ports(n) and returns: ports