class_docstr: Tests for `Retrace` ops.
class_docstr_tok: ["Tests","for","`","Retrace","`","ops","."]
docstr: Subject Retrace to a two-sequence, three-timestep minibatch.
docstr_tok: ["Subject","Retrace","to","a","two-sequence",",","three-timestep","minibatch","."]
code: def testRetraceThreeTimeSteps(self):
      """Subject Retrace to a two-sequence, three-timestep minibatch."""
      retrace = retrace_ops.retrace(
          self.lambda_,
          self.qs,
          self.targnet_qs,
          self.actions,
          self.rewards,
          self.pcontinues,
          self.target_policy_probs,
          self.behaviour_policy_probs,
      )
  
      with self.test_session() as sess:
          self.assertAllClose(
              sess.run(retrace.loss), self.expected_result
          )
  
file_path: trfl/trfl/retrace_ops_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  from six.moves import xrange
  import tensorflow.compat.v1
  from trfl import retrace_ops
label_desc: Use image node_id 2 for calling the RetraceOpsTest obj's underlying member method code with example usage: obj.testRetraceThreeTimeSteps() without return types