code: def data():
      path_to_data = "~/nervana/data/"
      return path_to_data
  
imports: import itertools
  import numpy
  import pytest
  import re
  import os
  import sys
  from neon.backends import gen_backend
  from neon.backends.nervanacpu import NervanaCPU
  from neon.layers.container import DeltasTree
label_desc: Use image node_id 3 for calling a global function with example usage: data() and returns: path_to_data