pandas.api.extensions.ExtensionArray.searchsorted

ExtensionArray.searchsorted(value, side='left', sorter=None)

Find indices where elements should be inserted to maintain order.

Find the indices into a sorted array self (a) such that, if the corresponding elements in value were inserted before the indices, the order of self would be preserved.

Assuming that self is sorted:

side	returned index i satisfies
left	self[i-1] < value <= self[i]
right	self[i-1] <= value < self[i]

Parameters:

valuearray-like, list or scalar

Value(s) to insert into self.

side{‘left’, ‘right’}, optional

If ‘left’, the index of the first suitable location found is given. If ‘right’, return the last such index. If there is no suitable index, return either 0 or N (where N is the length of self).

sorter1-D array-like, optional

Optional array of integer indices that sort array a into ascending order. They are typically the result of argsort.

Returns:

array of ints or int

If value is array-like, array of insertion points. If value is scalar, a single integer.

See also

numpy.searchsorted

Similar method from NumPy.

Examples

>>> arr = pd.array([1, 2, 3, 5])
>>> arr.searchsorted([4])
array([3])