Perhaps you mean this:
input_line = [
["2/6/2014", "13:31:12", "IN", "application1", "user1", "machine1"],
["2/6/2014", "13:31:12", "IN", "application2", "user2", "machine2"],
["2/6/2014", "13:31:52", "IN", "application3", "user3", "machine3"],
["2/6/2014", "13:38:37", "OUT", "application1", "user1", "machine1"],
["2/6/2014", "14:46:37", "OUT", "application2", "user2", "machine2"],
["2/6/2014", "15:56:37", "OUT", "application3", "user3", "machine3"]]
?
You can then use the syntax input_array[i][j]
without issues!