Reading from a text file python

Question

I have a text file which contains a matrix of numbers:

999 999  10  8
3 4 999 999 999 
6 999 2 7 999
999 6 3 5  6
999 9 1 10 999
10 6 999 2 2 999

Answer 1

nums = []
with open('file.txt') as f:
    for line in f:
        nums.append([int(n) for n in line.split()])

You could write that as one list comprehension, but that could get nasty.