code: def tearDownModule():
      global g_root
      global g_files
      global g_tmpdir
  
      g_tmpdir.__exit__(None, None, None)
      g_tmpdir = None
      g_root = None
      g_files = None
  
imports: import glob
  import numpy
  import nvidia.dali.fn
  import os
  import random
  import tempfile
  from nvidia.dali import Pipeline, pipeline_def
  from nose_utils import assert_raises
  from test_utils import compare_pipelines
label_desc: Use image node_id 4 for calling a global function with example usage: tearDownModule() without return types