How To Convert A Matrix Of Strings Into A Matrix Of Integers Using Comprehensions

I have a matrix [['1', '2'], ['3', '4']] which I want to convert to a matrix of integers. Is there is a way to do it using comprehensions?

Solution 1:

[ [int(a), int(b)] for a, b in matrix ]

Solution 2:

In the general case:

int_matrix = [[int(column) forcolumninrow] forrowin matrix]

Solution 3:

You could do it like:

>>>test = [['1', '2'], ['3', '4']]>>>[[int(itemInner) for itemInner in itemOuter] for itemOuter in test]
[[1, 2], [3, 4]]

As long as all the items are integer, the code could work.

Hope it be helpful!

Solution 4:

   [map(int, thing) for thing in matrix]