code: def test_psi(self):
      for x in 0.01 + 100 * np.random.random(50):
          scipy_psi = special.psi(x)
          my_psi = psi(x)
          assert_almost_equal(scipy_psi, my_psi)
  
file_path: nipy/nipy/labs/utils/tests/test_misc.py
imports: import numpy
  from numpy.testing import TestCase, assert_almost_equal
  from scipy import special
  from ..routines import gamln, mahalanobis, median, psi
label_desc: Use image node_id 7 for calling the TestAll obj's underlying member method code with example usage: obj.test_psi() without return types