How to convert a matrix of strings into a matrix of integers using comprehensions

Question

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?

Answer 1

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!