CategoricalIndex.where(cond, other=None)

CategoricalIndex.reshape(*args, **kwargs)

CategoricalIndex.groupby(values)

CategoricalIndex.sort_values(return_indexer=False, ascending=True)

CategoricalIndex.take(indices, axis=0, allow_fill=True, fill_value=None, **kwargs)

CategoricalIndex.copy(name=None, deep=False, dtype=None, **kwargs)

CategoricalIndex.is_monotonic alias for is_monotonic_increasing (deprecated)

CategoricalIndex.map(mapper)

CategoricalIndex.data return the data pointer of the underlying data

CategoricalIndex.T return the transpose, which is by definition self