code: def test_numbers_as_strings_with_numpy_output(self):
      # see issue #229
      X = np.array(["11", "12", "13", "14", "15"])
      oe = encoders.OrdinalEncoder(return_df=False)
      oe.fit(X)
  
imports: import warnings
  from datetime import timedelta
  import numpy
  from numpy.testing import assert_array_equal
  import pandas
  import sklearn
  import tests.helpers
  from sklearn.utils.estimator_checks import check_transformer_general, check_transformers_unfitted, check_n_features_in
  from sklearn.compose import ColumnTransformer
  from unittest import TestCase
  from copy import deepcopy
  import category_encoders
label_desc: Use image node_id 42 for calling the TestEncoders obj's underlying member method code with example usage: obj.test_numbers_as_strings_with_numpy_output() without return types