code: def arrays_arithmetic(in1, in2):
      return in1 + in2, in1 - in2 / 2.0
  
file_path: DALI/dali/test/python/test_gpu_python_function_operator.py
imports: import cupy
  from nvidia.dali.pipeline import Pipeline
  import nvidia.dali.ops
  import nvidia.dali.types
  import numpy
  import test_utils
  import random
  import os
label_desc: Use image node_id 3 for calling a global function with example usage: arrays_arithmetic(in1, in2) and returns: unknown,  unknown