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numpy string operations | swapcase() function

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  • Last Updated : 15 Jan, 2019

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:




# 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)

Output:

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

 
Code #2:




# 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 )

Output:

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

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