Index.delete(loc)

Index.itemsize return the size of the dtype of the item of the underlying data

Index.groupby(values)

Index.sort(*args, **kwargs)

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

Index.summary(name=None)

Index.names

Index.get_indexer_non_unique(target)

Index.join(other, how='left', level=None, return_indexers=False)

Index.holds_integer()