code: def test_empty_result_single_label_proba(self):
      num_labels = 3
      proba = empty_result(False, num_labels, return_prediction=False)
  
      self.assertTrue(isinstance(proba, np.ndarray))
      self.assertEqual(float, proba.dtype)
      self.assertEqual((0, 3), proba.shape)
  
file_path: small-text/tests/unit/small_text/utils/test_classification.py
imports: import unittest
  import numpy
  from numpy.testing import assert_array_equal
  from scipy.sparse import csr_matrix
  from sklearn.preprocessing import MultiLabelBinarizer
  from small_text.utils.classification import empty_result, prediction_result
  from tests.utils.testing import assert_csr_matrix_equal
label_desc: Use image node_id 8 for calling the ClassificationUtilsTest obj's underlying member method code with example usage: obj.test_empty_result_single_label_proba() without return types