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

Last Updated : 05 Feb, 2019

numpy.core.defchararray.rjust(arr, width, fillchar=' ') is another function for doing string operations in numpy. It returns an array with the elements of arr right-justified in a string of length width.It fills remaining space of each array element using fillchr parameter.If fillchr is not passed then it fills remaining spaces with blank space.

Parameters:
arr : array_like of str or unicode.Input array.
width : The final width of the each string .
fillchar : The character to fill in remaining space.

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

Code #1 :

import numpy as geek

in_arr = geek.array([ 'Numpy' , 'Python' , 'Pandas' ])

print ( "Input array : " , in_arr)

width = 8

out_arr = geek.char.rjust(in_arr, width)

print ( "Output right justified array: " , out_arr)

Output:

Input array : ['Numpy' 'Python' 'Pandas'] Output right justified array: [' Numpy' ' Python' ' Pandas']

Code #2 :

import numpy as geek

in_arr = geek.array([ 'Numpy' , 'Python' , 'Pandas' ])

print ( "Input array : " , in_arr)

width = 8

out_arr = geek.char.rjust(in_arr, width, fillchar = '*' )

print ( "Output right justified array: " , out_arr)

Output:

Input array : ['Numpy' 'Python' 'Pandas'] Output right justified array: ['***Numpy' '**Python' '**Pandas']

Code #3 :

import numpy as geek

in_arr = geek.array([ '1' , '11' , '111' ])

print ( "Input array : " , in_arr)

width = 5

out_arr = geek.char.rjust(in_arr, width, fillchar = '-' )

print ( "Output right justified array: " , out_arr)

Output:

Input array : ['1' '11' '111'] Output right justified array: ['----1' '---11' '--111']

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