input: Write a python function to get the data for training and testing.
  assert isinstance(get_data(), tuple)
  assert len(get_data()) == 2
output: def get_data():
      # Dummy data for example purposes
      training_data = [1, 2, 3, 4, 5]
      testing_data = [6, 7, 8, 9, 10]
      
      return (training_data, testing_data)