pandas.Index.get_loc

Index.get_loc(key, method=None, tolerance=None)

Get integer location for requested label

Parameters:

key : label method : {None, ‘pad’/’ffill’, ‘backfill’/’bfill’, ‘nearest’}, optional default: exact matches only. pad / ffill: find the PREVIOUS index value if no exact match. backfill / bfill: use NEXT index value if no exact match nearest: use the NEAREST index value if no exact match. Tied distances are broken by preferring the larger index value. tolerance : optional Maximum distance from index value for inexact matches. The value of the index at the matching location most satisfy the equation abs(index[loc] - key) <= tolerance. New in version 0.17.0.

Returns:

loc : int if unique index, possibly slice or mask if not