List of list, converting all strings to int, Python 3

Question

I am trying to convert all elements of the small lists in the big list to integers, so it should look like this:

current list:
list = [[\'1\',\'2\',\'3\'],[\         


        

Answer 1

Nested list comprehension is the best solution, but you can also consider map with lambda function:

lista = [['1','2','3'],['8','6','8'],['2','9','3'],['2','5','7'],['5','4','1'],['0','8','7']]

new_list = map(lambda line: [int(x) for x in line],lista)
# Line is your small list.
# With int(x) you are casting every element of your small list to an integer
# [[1, 2, 3], [8, 6, 8], [2, 9, 3], [2, 5, 7], [5, 4, 1], [0, 8, 7]]