numpy string operations | isalpha() function (original) (raw)

Last Updated : 14 Jan, 2019

numpy.core.defchararray.isalpha(arr) function returns True for each element if all characters in the string are alphabetic and there is at least one character; returns false otherwise.

Parameters: arr : array_like of str or unicode.Returns : [ndarray] Output array of bools.

Code #1 :

Python3 `

Python program explaining

numpy.char.isalpha() method

import numpy as geek

input array

in_arr = geek.array([ 'abcd', 'ac1bd', 'abdc', 'dcba', 'ab cd'] ) print ("Input array : ", in_arr)

out_arr = geek.char.isalpha(in_arr) print ("Output array: ", out_arr)

`

Output:

Input array : ['abcd' 'ac1bd' 'abdc' 'dcba' 'ab cd'] Output array: [ True False True True False]

Code #2 :

Python3 `

Python program explaining

numpy.char.isalpha() method

import numpy as geek

input array

in_arr = geek.array([ 'geeks', 'for', 'geeks', 'wow !'] ) print ("Input array : ", in_arr)

out_arr = geek.char.isalpha(in_arr) print ("Output array: ", out_arr)

`

Output:

Input array : ['geeks' 'for' 'geeks' 'wow!'] Output array: [ True True True False]

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