code: def __init__(self, reporter) -> None:
      self._reporter = reporter
      super().__init__()
      self.add_observer(reporter)
  
file_path: ReAgent/reagent/reporting/reporter_base.py
imports: import abc
  import logging
  from typing import Dict
  import torch
  from reagent.core.observers import CompositeObserver, EpochEndObserver, IntervalAggregatingObserver, ValueListObserver
  from reagent.core.result_registries import TrainingReport
  from reagent.core.tracker import ObservableMixin
  from reagent.core.utils import lazy_property
label_desc: Use image node_id 1 to create a new _ReporterObservable object from inherited base classes: ObservableMixin with example: obj = _ReporterObservable(reporter)