class_docstr: Default CommManager singleton implementation for Comms in the Kernel
class_docstr_tok: ["Default","CommManager","singleton","implementation","for","Comms","in","the","Kernel"]
code: def __init__(self) -> None:
      self.comms: dict[str, BaseComm] = {}
      self.targets: dict[str, CommTargetCallback] = {}
  
imports: from __future__ import annotations
  import contextlib
  import logging
  import typing
  import uuid
  from traitlets.utils.importstring import import_item
  import comm
label_desc: Use image node_id 1 to create a new CommManager object  with example: obj = CommManager()