Simple Linear Systems solver in Python

cramer.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

import numpy as num

# cont = True
print('***Linear System solver***\n')
print('Insert the coeficient matrix like this:\n \
        |a1||b1||c1| \n \
        |a2||b2||c2| \n \
        |a3||b3||c3| \n')

A = num.array([list(map(float, input('Insert coeficient matrix line: ').split(' ')))])
cont = True if (input('More lines? (y or n): ') == 'y') else False

while cont:
    A = num.append(A, [list(map(float, input('Insert coeficient matrix line: ').split(' ')))], axis = 0)
    cont = True if (input('More lines? (y or n): ') == 'y') else False
else:
    print(A)
    b = list(map(float, input('Insert results array: ').split(' ')))

x = num.linalg.solve(A, b)
# print(x)
j = 1
for i in x:
    print('x' + str(j) + ': '+ str(i) +'\n')
    j = j + 1