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numpy string operations | lower() function

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  • Last Updated : 14 Jan, 2019

numpy.core.defchararray.lower(arr) function is used to return an array with the elements converted to lowercase.

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.lower() 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.lower(in_arr)
print ("output lowercased array :", out_arr)

Output:

input array :  ['P4Q R' '4Q RP' 'Q RP4' 'RP4Q']
output lowercased array : ['p4q r' '4q rp' 'q rp4' 'rp4q']

 
Code #2:




# Python Program explaining
# numpy.char.lower() function 
  
import numpy as geek 
  
  
in_arr = geek.array(['GEEKS', 'FOR', 'GEEKS'])
  
print ("input array : ", in_arr)
  
out_arr = geek.char.lower(in_arr)
print ("output lowercased array :", out_arr )

Output:

input array :  ['GEEKS' 'FOR' 'GEEKS']
output lowercased array : ['geeks' 'for' 'geeks']

 

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