Define a function penultimate
which returns
the "last but one" (or "penultimate") element of a list.
>>> a_list = [0, 1, 2, 3, 4, 5, 6, 7] >>> penultimate(a_list) 6 >>> another_list = ['a', 'b', 'c', 'd', 'e', 'f'] >>> penultimate(another_list) 'e'Solution