Change language

operations with empty strings | find () function

| | | |

numpy.core.defchararray.find (arr, sub, start = 0, end = None) — this is another function for doing string operations in numpy. It returns the lowest index in the string where the substring sub is found for each element in arr within the range starts and ends. Otherwise -1 is returned.

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:

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

 
# import numy as 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.find (in_arr, sub = ’A’ )

print ( "Output array:" , out_arr ) 

Exit :

 Input array: [’aAaAaA’’ baA’ ’abBABba’] Output array: [1 2 3] 

Code # 2:

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

 
# import numy as a 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.find (in_arr, sub = ’a’ , start = 3 , end = 7 )

print ( "Output array:" , out_arr) 

Exit :

 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

News


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