a list like L = [[1, 2], [3, 4, 5], [6]], which has random numbers of list, which has random numbers.
How do I get another list m = [1, 2, 3, 4, 5, 6] in a succinct way? ( or iterate them) I should provide my own solution, but I really can't come out with one. -- https://mail.python.org/mailman/listinfo/python-list
