code: def test_extendedpinv(self):
      X = standard_normal((40, 10))
      np_inv = np.linalg.pinv(X)
      np_sing_vals = np.linalg.svd(X, 0, 0)
      sm_inv, sing_vals = pinv_extended(X)
      assert_almost_equal(np_inv, sm_inv)
      assert_almost_equal(np_sing_vals, sing_vals)
  
imports: from statsmodels.compat.pandas import assert_frame_equal, assert_series_equal
  from statsmodels.compat.python import lrange
  import string
  import numpy
  from numpy.random import standard_normal
  from numpy.testing import assert_almost_equal, assert_array_equal, assert_equal, assert_string_equal
  import pandas
  import pytest
  from statsmodels.datasets import longley
  from statsmodels.tools import tools
  from statsmodels.tools.tools import pinv_extended
label_desc: Use image node_id 10 for calling the TestTools obj's underlying member method code with example usage: obj.test_extendedpinv() without return types