Index.value_counts(normalize=False, sort=True, ascending=False, bins=None, dropna=True)

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

Index.data return the data pointer of the underlying data

Index.is_monotonic_decreasing return if the index is monotonic decreasing (only equal or decreasing)

Index.is_object()

Index.searchsorted(key, side='left', sorter=None)

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

Index.isin(values, level=None)

Index.is_categorical()

Index.drop(labels, errors='raise')