CategoricalIndex.reindex(target, method=None, level=None, limit=None, tolerance=None)

CategoricalIndex.drop_duplicates(*args, **kwargs)

CategoricalIndex.transpose(*args, **kwargs)

CategoricalIndex.nbytes return the number of bytes in the underlying data

CategoricalIndex.dropna(how='any')

CategoricalIndex.sym_diff(*args, **kwargs)

CategoricalIndex.unique()

CategoricalIndex.argsort(*args, **kwargs)

CategoricalIndex.get_duplicates()

CategoricalIndex.duplicated(*args, **kwargs)