code: def __call__(self):
      return self.reduce(self.values)
  
imports: import enum
  import os
  from time import time
  from typing import Union, Callable, Tuple, ByteString
  import numpy
  from tensorboard.compat.proto import event_pb2
  from tensorboard.compat.proto import summary_pb2
  from tensorboard.summary.writer.event_file_writer import EventFileWriter
  from tensorboard.util.tensor_util import make_tensor_proto
  from objax import util
label_desc: Use image node_id 2 for calling the DelayedScalar obj's underlying member method code with example usage: obj.__call__() and returns: self