code: def get_dropout_rng_seed(seed=None):
      if seed:
          f = C.ops.dropout(0.5, seed=seed)
      else:
          f = C.ops.dropout(0.5)
      return f.root_function.attributes["rngSeed"]
  
imports: import numpy
  import pytest
  import cntk
  from multiprocessing import Process, Queue
label_desc: Use image node_id 15 for calling a global function with example usage: get_dropout_rng_seed(seed) and returns: f