Inputting data into a two dimensional array in python?

Question

Python

A matrix is ​​given as a sequence of rows ending with a row containing only the string "end" (without quotes) for example:
21 312 21
25 412 13
end
how to write this into a two-dimensional array a?

Answer 1

Read lines, if the line is equal to 'end' then finish, otherwise split the line into parts by space, arrange the numbers in the list of lists.

Answer 2

2D array example

str1 = '''21 312 21
25 412 13'''

arr = [x.split(' ') for x in str1.split('\n')]
print(arr)

convert array values ​​to numbers - will be your homework