pandas.Index.slice_indexer#

Index.slice_indexer(start=None, end=None, step=None)[source]#

Compute the slice indexer for input labels and step.

Index needs to be ordered and unique.

Parameters:
startlabel, default None

If None, defaults to the beginning.

endlabel, default None

If None, defaults to the end.

stepint, default None

If None, defaults to 1.

Returns:
slice

A slice object.

Raises:
KeyErrorIf key does not exist, or key is not unique and index is

not ordered.

See also

Index.slice_locs

Computes slice locations for input labels.

Index.get_slice_bound

Retrieves slice bound that corresponds to given label.

Notes

This function assumes that the data is sorted, so use at your own peril.

Examples

This is a method on all index types. For example you can do:

>>> idx = pd.Index(list("abcd"))
>>> idx.slice_indexer(start="b", end="c")
slice(1, 3, None)

>>> idx = pd.MultiIndex.from_arrays([list("abcd"), list("efgh")])
>>> idx.slice_indexer(start="b", end=("c", "g"))
slice(1, 3, None)