numpy.strings.rfind

strings.rfind(a, sub, start=0, end=None)

For each element, return the highest index in the string where substring sub is found, such that sub is contained in the range [start, end).

Parameters:

aarray-like, with StringDType, bytes_, or str_ dtype

subarray-like, with StringDType, bytes_, or str_ dtype

The substring to search for.

start, endarray_like, with any integer dtype

The range to look in, interpreted as in slice notation.

Returns:

yndarray

Output array of ints

See also

str.rfind

Examples

>>> import numpy as np
>>> a = np.array(["Computer Science"])
>>> np.strings.rfind(a, "Science", start=0, end=None)
array([9])
>>> np.strings.rfind(a, "Science", start=0, end=8)
array([-1])
>>> b = np.array(["Computer Science", "Science"])
>>> np.strings.rfind(b, "Science", start=0, end=None)
array([9, 0])