Numpy string operations | rindex() function

 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 :  

# Python program explaining  # numpy.char.rindex() function  # importing numpy as geek  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 :  

# Python program explaining  # numpy.char.rindex() function  # importing numpy as geek  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