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operations with empty strings | swapcase () function

numpy.core.defchararray.swapcase(arr) returns a bitmap copy of a string with uppercase characters converted to lowercase and lowercase characters converted to uppercase register.

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:

# Python program explaining
# numpy.char.swapcase () function

 

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 swapcasecased array:" , out_arr)

Exit:

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

Code # 2:

Output:

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

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# Python program explaining
# numpy. char.swapcase () function

 

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)