code: def get_eval_inputs(features, labels):
      """Set up eval inputs in a single batch."""
      iterator_initializer_hook = IteratorInitializerHook()
  
      def _eval_input_fn():
          """Defines eval input fn."""
          features_placeholder = {
              k: tf.compat.v1.placeholder(v.dtype, v.shape)
              for k, v in six.iteritems(features)
          }
          if _use_multi_head():
              placeholder = tf.compat.v1.placeholder(
                  labels.dtype, labels.shape
              )
              labels_placeholder = {
                  _PRIMARY_HEAD: placeholder,
                  _SECONDARY_HEAD: placeholder,
              }
          else:
              labels_placeholder = tf.compat.v1.placeholder(
                  labels.dtype, labels.shape
              )
          dataset = tf.data.Dataset.from_tensors(
              (features_placeholder, labels_placeholder)
          )
          iterator = tf.compat.v1.data.make_initializable_iterator(
              dataset
          )
          if _use_multi_head():
              feed_dict = {
                  labels_placeholder[head_name]: labels
                  for head_name in labels_placeholder
              }
          else:
              feed_dict = {labels_placeholder: labels}
          feed_dict.update(
              {
                  features_placeholder[k]: features[k]
                  for k in features_placeholder
              }
          )
          iterator_initializer_hook.iterator_initializer_fn = (
              lambda sess: sess.run(
                  iterator.initializer, feed_dict=feed_dict
              )
          )
          return iterator.get_next()
  
      return _eval_input_fn, iterator_initializer_hook
  
imports: from absl import flags
  import numpy
  import six
  import tensorflow
  from tensorflow import estimator
  import tensorflow_ranking
label_desc: Use image node_id 5 for calling a global function with example usage: get_eval_inputs(features, labels) and returns: _eval_input_fn,  iterator_initializer_hook, iterator