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

Last Updated : 28 Nov, 2022

numpy.core.defchararray.swapcase(arr) function return element-wise a copy of the string with uppercase characters converted to lowercase and lowercase characters converted to uppercase.

Syntax: numpy.char.swapcase(arr) Parameters: arr : [ array_like ] Input array which may be str or unicode. Returns : [ndarray] Output lowercased array of str or unicode, depending on input type.

Code #1:

Python3

import numpy as geek

in_arr = geek.array([ 'P4Q R' , '4q Rp' , 'Q Rp4' , 'rp4q' ])

print (" input array : ", in_arr)

out_arr = geek.char.swapcase(in_arr)

print ("output swapcased array :", out_arr)

Output:

input array : ['P4Q R' '4q Rp' 'Q Rp4' 'rp4q'] output swapcasecased array : ['p4q r' '4Q rP' 'q rP4' 'RP4Q']

Code #2:

Python3

import numpy as geek

in_arr = geek.array([ 'Geeks' , 'For' , 'Geeks' ])

print (" input array : ", in_arr)

out_arr = geek.char.swapcase(in_arr)

print ("output swapcasecased array :", out_arr )

Output:

input array : ['Geeks' 'For' 'Geeks'] output swapcasecased array : ['gEEKS' 'fOR' 'gEEKS']

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