code: def __init__(
      self,
      value_list_observers: Dict[str, ValueListObserver],
      aggregating_observers: Dict[str, IntervalAggregatingObserver],
  ):
      epoch_end_observer = EpochEndObserver(self.flush)
      self._value_list_observers = value_list_observers
      self._aggregating_observers = aggregating_observers
      super().__init__(
          list(value_list_observers.values())
          + list(aggregating_observers.values())
          + [epoch_end_observer]
      )
      self._reporter_observable = _ReporterObservable(self)
  
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 ReporterBase object from inherited base classes: CompositeObserver with example: obj = ReporterBase(value_list_observers, aggregating_observers)