code: def teardown_module():
      global gtab_2s, DWIsim, DWIsim_all_taylor, FIE, RDI, ADI, ADE, Tor, RDE
      gtab_2s, DWIsim, DWIsim_all_taylor = None, None, None
      FIE, RDI, ADI, ADE, Tor, RDE = None, None, None, None, None, None
  
file_path: dipy/dipy/reconst/tests/test_dki_micro.py
imports: import numpy
  import random
  import dipy.reconst.dki_micro
  from numpy.testing import assert_array_almost_equal, assert_almost_equal, assert_, assert_raises, assert_allclose
  from dipy.sims.voxel import multi_tensor_dki, _check_directions, multi_tensor
  from dipy.io.gradients import read_bvals_bvecs
  from dipy.core.gradients import gradient_table
  from dipy.data import get_fnames
  from dipy.reconst.dti import eig_from_lo_tri
  from dipy.data import default_sphere, get_sphere
label_desc: Use image node_id 2 for calling a global function with example usage: teardown_module() without return types