how can i adjust space between elements of numpy array?

Question

I want such type of output

    [[ 1.  0.  0.]
     [ 0.  1.  0.]
     [ 0.  0.  1.]]

But I am getting This

    [[1. 0. 0.]
     [0. 1. 0.]
     [0. 0. 1.]]

My code is this :

import numpy
print(numpy.identity(size))

There are controls in np.set_print_options. But if you are a numpy beginner, I'd suggest focusing your learning elsewhere. — hpaulj
– hpaulj, Commented Aug 31, 2020 at 17:50

Peter Rodenkirch · Accepted Answer · 2020-09-07 07:11:36Z

1

This should do the trick:

numpy.set_printoptions(formatter={'all': lambda x: " {:.0f} ".format(x)})

If you want to add the decimal point replace " {:.0f} " by " {:.0f}. "

You can modify the number of spaces or formatting in general in the lambda function.

answered Aug 31, 2020 at 18:03

Peter Rodenkirch

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2 Comments

actually it's adjusting spacing between the elements but it converts 1. to 1.0 and 0. to 0.0 which i don't want.

@Nitish770 I edited the post, depending wether you need the decimal point or not.

user13824946 · Accepted Answer · 2020-08-31 17:59:41Z

-1

use numpy.arrange(start, stop, size) as follow

import numpy as np

arr1 = np.array([[1,   2,   3,   4,   5], [6,  7,  8,  9,  0]])

arr2 = np.arange(1, 9, 1)

print(arr2)

output

[1 2 3 4 5 6 7 8]

answered Aug 31, 2020 at 17:59

user13824946

I don't think he's interested in the numeric space, but rather the print display of a 2d array.