class_docstr: An object coordinating listeners and their addresses.
class_docstr_tok: ["An","object","coordinating","listeners","and","their","addresses","."]
code: def __init__(self):
      self.listeners = weakref.WeakValueDictionary()
      self.addr_suffixes = itertools.count(1)
      self._ip = None
      self.lock = threading.Lock()
  
imports: from __future__ import annotations
  import asyncio
  import itertools
  import logging
  import os
  import threading
  import weakref
  from collections import deque, namedtuple
  from tornado.concurrent import Future
  from tornado.ioloop import IOLoop
  from distributed.comm.core import BaseListener, Comm, CommClosedError, Connector
  from distributed.comm.registry import Backend, backends
  from distributed.protocol import nested_deserialize
  from distributed.utils import get_ip, is_python_shutting_down
label_desc: Use image node_id 1 to create a new Manager object  with example: obj = Manager()