code: def _make_address(address):
      if address is None or isinstance(address, int):
          port = address
          address = ("localhost", port)
      if isinstance(address, tuple) and len(address) == 2:
          host = address[0]
          port = address[1]
          if isinstance(host, str) and (
              port is None or isinstance(port, int)
          ):
              return address
      raise ValueError("Invalid address.")
  
imports: import errno
  import http.server
  import importlib.util
  import json
  import os
  import random
  import re
  import socket
  import socketserver
  import sys
  import threading
  import time
  import webbrowser
  import urllib.parse
label_desc: Use image node_id 4 for calling a global function with example usage: _make_address(address) and returns: address