code: def test_nparray(self):
      NPSequence = (
          [np.array(range(3), "d"), None],
          [np.array(range(3), "i"), None],
          [np.array(range(3), "f"), None],
          [np.array(range(3), "d"), array.array("d", [1, 2, 3])],
          [np.array(range(3), "i"), array.array("d", [1, 2, 3])],
          [np.array(range(3), "f"), array.array("d", [1, 2, 3])],
          [np.array(range(3), "d"), array.array("d", [1, 2, 3]), None],
          [np.array(range(3), "i"), array.array("d", [1, 2, 3]), None],
          [np.array(range(3), "f"), array.array("d", [1, 2, 3]), None],
      )
  
      # Run the tests
      for seq in NPSequence:
          inferred_type, result = _get_inferred_column_type(seq)
          self.assertEqual(inferred_type, np.ndarray)
          reconverted_result = _tr_flex_list(result, inferred_type)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import numpy
  from numpy import nan
  import array
  import datetime
  from ..data_structures import image
  from ..None import SArray
  import os
  from .._cython.cy_flexible_type import _translate_through_flexible_type
  from .._cython.cy_flexible_type import _translate_through_flex_list
  from .._cython.cy_flexible_type import infer_type_of_list
  from .._cython.cy_flexible_type import _get_inferred_column_type, _all_convertable
  from .._cython.cy_flexible_type import _check_ft_pyobject_hint_path
  from .._cython.cy_flexible_type import pytype_from_type_name
  from .._cython.cy_flexible_type import GMT
  import datetime
  from itertools import product
  from copy import copy
  import pytest
  import sys
label_desc: Use image node_id 6 for calling the FlexibleTypeInference obj's underlying member method code with example usage: obj.test_nparray() without return types