Define a function element_at
which returns
the Kth element of a list; the convention used for this
problem is that K=1 corresponds to the first element.
>>> a_list = [0, 1, 2, 3, 4, 5, 6, 7] >>> element_at(a_list, 3) 2 >>> another_list = ['a', 'b', 'c', 'd', 'e', 'f'] >>> element_at(another_list, 1) 'a'Solution