pandas.MultiIndex.get_loc — pandas 2.2.3 documentation (original) (raw)

MultiIndex.get_loc(key)[source]#

Get location for a label or a tuple of labels.

The location is returned as an integer/slice or boolean mask.

Parameters:

keylabel or tuple of labels (one for each level)

Returns:

int, slice object or boolean mask

If the key is past the lexsort depth, the return may be a boolean mask array, otherwise it is always a slice or int.

See also

Index.get_loc

The get_loc method for (single-level) index.

MultiIndex.slice_locs

Get slice location given start label(s) and end label(s).

MultiIndex.get_locs

Get location for a label/slice/list/mask or a sequence of such.

Notes

The key cannot be a slice, list of same-level labels, a boolean mask, or a sequence of such. If you want to use those, useMultiIndex.get_locs() instead.

Examples

mi = pd.MultiIndex.from_arrays([list('abb'), list('def')])

mi.get_loc('b') slice(1, 3, None)

mi.get_loc(('b', 'e')) 1