code: def get_dataset(prefix="ml-100k"):
      """Returns a pair of NDArrayDataIter, one for train, one for test."""
      ensure_local_data(prefix)
      return (
          load_mldataset(f"./{prefix}/u1.base"),
          load_mldataset(f"./{prefix}/u1.test"),
      )
  
imports: import os
  import mxnet
  from mxnet import gluon
label_desc: Use image node_id 3 for calling a global function with example usage: get_dataset(prefix) and returns: load_mldataset,  load_mldataset