code: def test_matching_blocks_ok(arrays):
      check_matching_blocks(*arrays)
  
imports: from collections import namedtuple
  import dask.array
  import dask.dataframe
  import numpy
  import pandas
  import pandas.testing
  import pytest
  from dask.array.utils import assert_eq
  from dask.dataframe.utils import assert_eq
  from dask_ml.datasets import make_classification
  from dask_ml.utils import _num_samples, assert_estimator_equal, check_array, check_chunks, check_matching_blocks, check_random_state, handle_zeros_in_scale, slice_columns
label_desc: Use image node_id 15 for calling a global function with example usage: test_matching_blocks_ok(arrays) without return types