code: def randn(rng, *shape):
      return np.asarray(rng.randn(*shape), dtype=np.float32)
  
imports: from nnabla.utils import nnabla_pb2
  from six.moves import filter
  import copy
  import nnabla
  import nnabla.ext_utils
  import nnabla.functions
  import nnabla.utils.converter
  import nnabla.dtypes
  from nnabla.testing import assert_allclose
  import numpy
  import numpy
  import platform
label_desc: Use image node_id 6 for calling a global function with example usage: randn(rng) and returns: np