code: def test_create_iris_data(self, append_special_characters):
      (
          X_train,
          X_test,
          y_train,
          y_test,
          feature_names,
          classes,
      ) = create_iris_data(append_special_characters)
      assert X_train is not None
      assert X_test is not None
      assert y_train is not None
      assert y_test is not None
      assert feature_names is not None
      assert classes is not None
  
file_path: responsible-ai-toolbox/rai_test_utils/tests/test_data_utils.py
imports: import pytest
  from rai_test_utils.datasets.tabular import create_adult_census_data, create_binary_classification_dataset, create_cancer_data, create_complex_titanic_data, create_diabetes_data, create_energy_data, create_housing_data, create_iris_data, create_msx_data, create_multiclass_classification_dataset, create_reviews_data, create_simple_titanic_data, create_timeseries_data, create_wine_data
  from rai_test_utils.datasets.vision import get_images, load_fridge_object_detection_dataset
label_desc: Use image node_id 7 for calling the TestDataUtils obj's underlying member method code with example usage: obj.test_create_iris_data(append_special_characters) without return types