code: def single_chunk_blobs():
      """X, y pair for clustering
  
      The `X` and `y` have a single block, so chunksize is 100.
      Useful for testing `partial_fit` methods.
      """
      X, y = make_blobs(chunks=100, random_state=0)
      return X, y
  
imports: import contextlib
  import string
  import dask.dataframe
  import numpy
  import pytest
  from distributed.utils_test import cluster
  from dask_ml.datasets import make_blobs, make_classification, make_counts, make_regression
label_desc: Use image node_id 12 for calling a global function with example usage: single_chunk_blobs() and returns: X,  y