code: def test_both_branches_only_assign(pred):
      def f(pred, true_branch, false_branch):
          if pred:
              result = true_branch
          else:
              result = false_branch
          return result
  
      generic_execute(
          f, [pred, lambda _: np.int32(6), lambda _: np.int32(9)]
      )
  
imports: from nvidia.dali.pipeline import pipeline_def, experimental
  import nvidia.dali.fn
  import nvidia.dali.types
  from nvidia.dali.types import SampleInfo
  from nvidia.dali import _conditionals
  from nvidia.dali.data_node import DataNode
  import numpy
  import os
  from test_utils import check_batch, compare_pipelines
  from nose_utils import assert_raises
  from test_utils import get_dali_extra_path
  from nose2.tools import params
  import itertools
label_desc: Use image node_id 15 for calling a global function with example usage: test_both_branches_only_assign(pred) and returns: result