Change language

operations with empty strings | rfind () function

| | | | |

numpy.core.defchararray.find (arr, sub, start = 0, end = None) — this is another function for doing string operations in numpy. Returns the highest index in the string where the substring sub is found for each item in arr.It. returns -1 if sub is not contained in [start, end] .

Parameters:
arr: array_like of str or unicode.
sub: [str or unicode] The substring which to be searched.
start: [int , optional] The starting location in each string.
end: [int, optional] The ending location in each string.

Returns: [ndarray] Output array of ints.

Code # 1:

< / tbody>

# Python program explaining
# numpy.char.rfind () method

 
# import numy as a geek

import numpy as geek

  
# input arrays

in_arr = geek.array ([ ’aAaAaA’ , ’baA’ , ’ abBABba’ ])

print ( "Input array:" , in_arr) 

 
#output arrays

out_arr = geek .char.rfind (in_arr, sub = ’A’ )

print ( "Output array:" , out_arr) 

Output :

 Input array: [’aAaAaA’’ baA’ ’abBABba’] Output array: [5 2 3] 

Code # 2:

Output :

 Input array: [’aAaAaA’’ aA’ ’abBABba’] Output array: [4 -1 6] 

Shop

Learn programming in R: courses

$

Best Python online courses for 2022

$

Best laptop for Fortnite

$

Best laptop for Excel

$

Best laptop for Solidworks

$

Best laptop for Roblox

$

Best computer for crypto mining

$

Best laptop for Sims 4

$

Latest questions

NUMPYNUMPY

psycopg2: insert multiple rows with one query

12 answers

NUMPYNUMPY

How to convert Nonetype to int or string?

12 answers

NUMPYNUMPY

How to specify multiple return types using type-hints

12 answers

NUMPYNUMPY

Javascript Error: IPython is not defined in JupyterLab

12 answers


Wiki

Python OpenCV | cv2.putText () method

numpy.arctan2 () in Python

Python | os.path.realpath () method

Python OpenCV | cv2.circle () method

Python OpenCV cv2.cvtColor () method

Python - Move item to the end of the list

time.perf_counter () function in Python

Check if one list is a subset of another in Python

Python os.path.join () method

# Python program explaining
# numpy.char.rfind () method

 
# import numy as geek

import numpy as geek

 
# input arrays

in_arr = geek.array ([ ’ aAaAaA’ , ’aA’ , ’abBABba’ ])

print ( " Input array: " , in_arr) 

 
# output arrays

out_arr = geek.char.rfind (in_arr, sub = ’a’ , start = 3 , end = 7 )

print ( "Output array:" , out_arr)