How to convert a 2d string list in 2d int list? example:
>>> pin_configuration = [['1', ' 1', ' 3'], ['2', ' 3', ' 5'], ['3'], ['4', ' 5'], ['5', ' 1'], ['6', ' 6'], ['7']]
>>> to [[1,1,3], [2,3,5], [3], [4,5], [5,1], [6,6], [7]]
Python 3.x
print ( [list( map(int,i) ) for i in l] )
Output :
[[1, 1, 3], [2, 3, 5], [3], [4, 5], [5, 1], [6, 6], [7]]