class_docstr: Background process for tracking resource usage
class_docstr_tok: ["Background","process","for","tracking","resource","usage"]
code: def _update_pids(self, pid):
      return [self.parent] + [
          p
          for p in self.parent.children()
          if p.pid != pid and p.status() != "zombie"
      ]
  
imports: from __future__ import annotations
  from collections import namedtuple
  from itertools import starmap
  from multiprocessing import Pipe, Process, current_process
  from time import sleep
  from timeit import default_timer
  from dask.callbacks import Callback
  from dask.utils import import_required
label_desc: Use image node_id 3 for calling the _Tracker obj's underlying member method code with example usage: obj._update_pids(pid) and returns: unknown