code: def test_train_test_split_blockwise_dataframe(
      xy_classification_pandas,
  ):
      X, y = xy_classification_pandas
      with pytest.raises(NotImplementedError):
          dask_ml.model_selection.train_test_split(
              X, y, random_state=42, shuffle=False, blockwise=False
          )
  
imports: import dask.array
  import dask.dataframe
  import numpy
  import pandas
  import pytest
  from sklearn.datasets import fetch_20newsgroups, make_regression
  import dask_ml.model_selection
  from dask_ml._compat import DASK_2130
label_desc: Use image node_id 9 for calling a global function with example usage: test_train_test_split_blockwise_dataframe(xy_classification_pandas) without return types