code: def __init__(self):
      self.dummy_features = self._init_dummy_features()
  
imports: import pytest
  import joblib
  import os
  import json
  import numpy
  import pandas
  from itertools import product
  import matplotlib
  from abc import ABC, abstractmethod
  import warnings
label_desc: Use image node_id 1 to create a new DummyDataGenerator object  with example: obj = DummyDataGenerator()