code: def test_eigen_ref_to_python():
      from pybind11_tests import (
          cholesky1,
          cholesky2,
          cholesky3,
          cholesky4,
          cholesky5,
          cholesky6,
      )
  
      chols = [
          cholesky1,
          cholesky2,
          cholesky3,
          cholesky4,
          cholesky5,
          cholesky6,
      ]
      for i, chol in enumerate(chols, start=1):
          mymat = chol(np.array([[1, 2, 4], [2, 13, 23], [4, 23, 77]]))
          assert np.all(
              mymat == np.array([[1, 0, 0], [2, 3, 0], [4, 5, 6]])
          ), "cholesky{}".format(i)
  
file_path: coremltools/deps/pybind11/tests/test_eigen.py
imports: import pytest
label_desc: Use image node_id 7 for calling a global function with example usage: test_eigen_ref_to_python() without return types