Subdividing a column

[mesh01]

This is better already:

import numpy as np

data = (np.loadtxt("./input.txt", dtype="int"))

A= 4
B= 2
C= 5
D= 1

x = np.array(data[0:A])
y = np.array(data[A:A+B])
z = np.array(data[A+B:A+B+C])
w = np.array(data[A+B+C:A+B+C+D])

print(x,y,z,w)

with open('output.txt','w') as f_out:

    f_out.write(f"{x}\n{y}\n{z}\n{w}\n")

file.txt output:

Output:
[ 5 77  1 -4]
[ 9 17]
[13  2  1  5 63]
[8]

Now I have to figure out how to get the values ​​written in column (and not in line) and without the square brackets.

Bye,

m.