code: def testScanCapturesVariables(self):
      with self.cached_session() as sess:
          x = random_ops.random_uniform([])
          fn = lambda accum, elem: accum + x * elem
          out = ctc_ops._scan(
              fn, constant_op.constant([0.0, 1.0, 2.0]), 23.0
          )
          self.assertAllClose(
              *sess.run(
                  [
                      [23.0 + x * 0.0, 23.0 + x * 1.0, 23.0 + x * 3.0],
                      out,
                  ]
              )
          )
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.eager import backprop
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import random_seed
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import ctc_ops
  from tensorflow.python.ops import gradients_impl
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import random_ops
  from tensorflow.python.ops import sparse_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 20 for calling the CTCLossTestV2 obj's underlying member method code with example usage: obj.testScanCapturesVariables() without return types