code: def localhost() -> str:
      """return ip for localhost (almost always 127.0.0.1)"""
      return LOCALHOST
  
imports: from __future__ import annotations
  import os
  import re
  import socket
  import subprocess
  from subprocess import PIPE, Popen
  from typing import Any, Callable, Iterable, Sequence
  from warnings import warn
label_desc: Use image node_id 15 for calling a global function with example usage: localhost() and returns: LOCALHOST