code: def data(request):
      return request.config.getoption("--data_dir")
  
imports: import itertools
  import numpy
  import pytest
  import re
  from neon.backends import gen_backend
  from neon.backends.nervanacpu import NervanaCPU
  from neon.backends.nervanamkl import NervanaMKL
  from neon.layers.container import DeltasTree
label_desc: Use image node_id 3 for calling a global function with example usage: data(request) and returns: request