code: def _start_view(data, host, port, logging):
      tb_servers = TBServers(data)
      app = _view_app(data, tb_servers)
      server = serving_util.make_server(host, port, app, logging)
      sys.stdout.flush()
      server.serve_forever()
      tb_servers.stop_servers()
  
imports: import json
  import logging
  import math
  import os
  import socket
  import subprocess
  import sys
  import threading
  import time
  from werkzeug.exceptions import NotFound
  from werkzeug.utils import redirect
  from guild import serving_util
  from guild import util
  from guild import var
label_desc: Use image node_id 4 for calling a global function with example usage: _start_view(data, host, port, logging) without return types