numpy string operations | rstrip() function

numpy.core.defchararray.rstrip(arr, chars=None) is another function for doing string operations in numpy. It returns a copy with the trailing characters removed for each element in arr.

Parameters:
arr : array_like of str or unicode.
char : [str or unicode, optional] the set of characters to be removed. If omitted or None, it removes whitespace. The chars argument is not a prefix or suffix; it is all combinations of its values which we want to strip.

Returns : [ndarray] Output array of str or unicode, depending on input type.

Code #1 :

# Python program explaining
# numpy.char.rstrip() method

import numpy as geek

# input arrays
in_arr = geek.array(['Sun', '  Moon  ', 'Star'])
print ("Input array : ", in_arr)

out_arr = geek.char.rstrip(in_arr)

# whitespace removed from arr[1]
# as we have set chars = None
print ("Output array: ", out_arr)

Output:

Input array :  ['Sun' ' Moon ' 'Star']
Output array:  ['Sun' 'Moon' 'Star']

Code #2 :

# Python program explaining
# numpy.char.rstrip() method

import numpy as geek

# input arrays
in_arr = geek.array([ 'Geeks', 'For', 'Geeks'] )
print ("Input array : ", in_arr)

out_arr = geek.char.rstrip(in_arr, chars ='s')

#'s' removed from arr[0] and
# arr[2] as we have set chars ='s'
print ("Output array: ", out_arr)

Output:

Input array :  ['Geeks' 'For' 'Geeks']
Output array:  ['Geek' 'For' 'Geek']

Code #3 :

# Python program explaining
# numpy.char.rstrip() method

import numpy as geek

# input arrays
in_arr = geek.array([ 'GeeksG', 'ForG', 'Geeks'] )
print ("Input array : ", in_arr)

out_arr = geek.char.rstrip(in_arr, chars ='G')

# will strip 'G' from right side
# from each element(if exists)
print ("Output array: ", out_arr)

Output:

Input array :  ['GeeksG' 'ForG' 'Geeks']
Output array:  ['Geeks' 'For' 'Geeks']