code: def find_free_port():
      sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
      with contextlib.closing(sock) as sock:
          sock.bind(("", 0))
          sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
          return sock.getsockname()[1]
  
imports: import os
  import contextlib
  import functools
  import gc
  import socket
  import sys
  import textwrap
  import types
  import warnings
label_desc: Use image node_id 9 for calling a global function with example usage: find_free_port() and returns: sock