code: def main():
      parser = ArgumentParser()
      parser.add_argument(
          "--initial_peers",
          nargs="*",
          help="Multiaddrs of the peers that will welcome you into the existing DHT. "
          "Example: /ip4/203.0.113.1/tcp/31337/p2p/XXXX /ip4/203.0.113.2/tcp/7777/p2p/YYYY",
      )
      parser.add_argument(
          "--host_maddrs",
          nargs="*",
          default=["/ip4/0.0.0.0/tcp/0"],
          help="Multiaddrs to listen for external connections from other DHT instances. "
          "Defaults to all IPv4 interfaces and the TCP protocol: /ip4/0.0.0.0/tcp/0",
      )
      parser.add_argument(
          "--announce_maddrs",
          nargs="*",
          help="Visible multiaddrs the host announces for external connections from other DHT instances",
      )
      parser.add_argument(
          "--use_ipfs",
          action="store_true",
          help='Use IPFS to find initial_peers. If enabled, you only need to provide the "/p2p/XXXX" '
          "part of the multiaddrs for the initial_peers "
          "(no need to specify a particular IPv4/IPv6 host and port)",
      )
      parser.add_argument(
          "--identity_path",
          help="Path to a private key file. If defined, makes the peer ID deterministic. "
          "If the file does not exist, writes a new private key to this file.",
      )
      parser.add_argument(
          "--no_relay",
          action="store_false",
          dest="use_relay",
          help="Disable circuit relay functionality in libp2p (see https://docs.libp2p.io/concepts/nat/circuit-relay/)",
      )
      parser.add_argument(
          "--use_auto_relay",
          action="store_true",
          help="Look for libp2p relays to become reachable if we are behind NAT/firewall",
      )
      parser.add_argument(
          "--refresh_period",
          type=int,
          default=30,
          help="Period (in seconds) for fetching the keys from DHT",
      )
  
      args = parser.parse_args()
  
      dht = DHT(
          start=True,
          initial_peers=args.initial_peers,
          host_maddrs=args.host_maddrs,
          announce_maddrs=args.announce_maddrs,
          use_ipfs=args.use_ipfs,
          identity_path=args.identity_path,
          use_relay=args.use_relay,
          use_auto_relay=args.use_auto_relay,
      )
      log_visible_maddrs(
          dht.get_visible_maddrs(), only_p2p=args.use_ipfs
      )
  
      try:
          while True:
              dht.run_coroutine(report_status, return_future=False)
              time.sleep(args.refresh_period)
      except KeyboardInterrupt:
          logger.info("Caught KeyboardInterrupt, shutting down")
      finally:
          dht.shutdown()
  
imports: import time
  from argparse import ArgumentParser
  from secrets import token_hex
  from hivemind.dht import DHT, DHTNode
  from hivemind.utils.logging import get_logger, use_hivemind_log_handler
  from hivemind.utils.networking import log_visible_maddrs
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types