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Showing content from https://pandas.pydata.org/docs/dev/user_guide/../reference/api/pandas.Index.get_loc.html below:

pandas.Index.get_loc — pandas 3.0.0.dev0+2231.g4f2aa4d2be documentation

Index.get_loc(key)[source]#

Get integer location, slice or boolean mask for requested label.

Parameters:

keylabel

The key to check its location if it is present in the index.

Returns:

int if unique index, slice if monotonic index, else mask

Integer location, slice or boolean mask.

See also

Index.get_slice_bound

Calculate slice bound that corresponds to given label.

Index.get_indexer

Computes indexer and mask for new index given the current index.

Index.get_non_unique

Returns indexer and masks for new index given the current index.

Index.get_indexer_for

Returns an indexer even when non-unique.

Examples

>>> unique_index = pd.Index(list("abc"))
>>> unique_index.get_loc("b")
1

>>> monotonic_index = pd.Index(list("abbc"))
>>> monotonic_index.get_loc("b")
slice(1, 3, None)

>>> non_monotonic_index = pd.Index(list("abcb"))
>>> non_monotonic_index.get_loc("b")
array([False,  True, False,  True])

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