DataFrame.sort_index()

axis : index, columns to direct sorting

level : int or level name or list of ints or list of level names

if not None, sort on values in specified index level(s)

ascending : boolean, default True

Sort ascending vs. descending

inplace : bool, default False

if True, perform operation in-place

kind : {?quicksort?, ?mergesort?, ?heapsort?}, default ?quicksort?

Choice of sorting algorithm. See also ndarray.np.sort for more information. mergesort is the only stable algorithm. For DataFrames, this option is only applied when sorting on a single column or label.

na_position : {?first?, ?last?}, default ?last?

first puts NaNs at the beginning, last puts NaNs at the end

sort_remaining : bool, default True

if true and sorting by level and index is multilevel, sort by other levels too (in order) after sorting by specified level