DataFrame.sort()

columns : object

Column name(s) in frame. Accepts a column name or a list for a nested sort. A tuple will be interpreted as the levels of a multi-index.

ascending : boolean or list, default True

Sort ascending vs. descending. Specify list for multiple sort orders

axis : {0 or ?index?, 1 or ?columns?}, default 0

Sort index/rows versus columns

inplace : boolean, default False

Sort the DataFrame without creating a new instance

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

This option is only applied when sorting on a single column or label.

na_position : {?first?, ?last?} (optional, default=?last?)

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