class_docstr: Stores and manipulate eval_metric tuples.
class_docstr_tok: ["Stores","and","manipulate","eval_metric","tuples","."]
code: def __init__(self):
      self._metric_fns = []
      self._args = []
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import collections
  import inspect
  from absl import logging
  from adanet import tf_compat
  import six
  import tensorflow.compat.v2
label_desc: Use image node_id 1 to create a new _EvalMetricsStore object from inherited base classes: object with example: obj = _EvalMetricsStore()