code: def setup_args():
      """
      Set up args, specifically for the port number.
  
      :return: A parser that parses the port from commandline arguments.
      """
      parser = ParlaiParser(False, False)
      parser_grp = parser.add_argument_group("Browser Chat")
      parser_grp.add_argument(
          "--port",
          default=35496,
          type=int,
          help="Port used by the web socket (run.py)",
      )
      parser_grp.add_argument(
          "--host",
          default="localhost",
          type=str,
          help="Host from which allow requests, use 0.0.0.0 to allow all IPs",
      )
      parser_grp.add_argument(
          "--serving_port",
          default=8080,
          type=int,
          help="Port used to configure the server",
      )
  
      return parser.parse_args()
  
imports: import json
  import websocket
  import threading
  from parlai.core.params import ParlaiParser
  from parlai.scripts.interactive_web import WEB_HTML, STYLE_SHEET, FONT_AWESOME
  from http.server import BaseHTTPRequestHandler, HTTPServer
label_desc: Use image node_id 7 for calling a global function with example usage: setup_args() and returns: parser