Numpy string operations | rindex() function (original) (raw)

Last Updated : 29 Aug, 2020

numpy.core.defchararray.rindex() function, raises ValueError when the substring sub is not found. Calls str.rindex element-wise.

Syntax : numpy.core.defchararray.rindex(arr, sub, start = 0, end = None)

Parameters :

arr : [array-like of str or unicode] Array-like of str .

sub : [str or unicode] Input string or unicode.

start, end : [int, optional] Optional arguments start and end are interpreted as in slice notation.

Return : Return the output array of ints.

Code #1 :

Python3

import numpy as geek

arr = "GeeksforGeeks - A computer science portal for geeks"

sub = 'science'

gfg = geek.char.rindex(arr, sub)

print (gfg)

Output :

27

Code #2 :

Python3

import numpy as geek

arr = "GeeksforGeeks - A computer science portal for geeks"

sub = 'geeks'

gfg = geek.char.rindex(arr, sub, start = 0 , end = None )

print (gfg)

Output :

46

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