def __init__(self, intermediate_directory='intermediates'):
    '\n        :param intermediate_directory: Directory, where the\n            intermediate pandas dataframe should be persisted\n            to.\n        '
    super(NumpyNullPreprocessor, self).__init__()
    self._intermediate_directory = intermediate_directory
    self._cached = False
    self._cached_object = None
:param intermediate_directory: Directory, where the
    intermediate pandas dataframe should be persisted
    to.
def __init__(self, intermediate_directory='intermediates'):
    '\n        :param intermediate_directory: Directory, where the\n            intermediate pandas dataframe should be persisted\n            to.\n        '
    super(NumpyNullPreprocessor, self).__init__()
    self._intermediate_directory = intermediate_directory
    self._cached = False
    self._cached_object = None