code: def test_tovw_raises_for_uint():
      X = pd.DataFrame({"a": [1]}, dtype="uint32")
      y = pd.Series(np.zeros(1))
  
      with pytest.raises(TypeError):
          VWRegressor().fit(X, y)
  
imports: from collections import namedtuple
  import os
  import numpy
  from packaging import version
  import pandas
  import pytest
  from scipy.sparse import csr_matrix
  from sklearn import datasets, __version__
  from sklearn.model_selection import KFold
  from sklearn.utils.estimator_checks import check_estimator
  from vowpalwabbit.sklearn import VW, VWClassifier, VWRegressor, tovw, VWMultiClassifier, VWRegressor
label_desc: Use image node_id 3 for calling a global function with example usage: test_tovw_raises_for_uint() without return types