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
- Returns:
- slice
- Raises:
- KeyErrorIf key does not exist, or key is not unique and index is
not ordered.
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)