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

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:

Python3 `

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:

Python3 `

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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