L.reverse() modifies L in place. As a general rule, Python builtin methods will either mutate or return something but not both
The usual way to reverse a list is to use
print L[::-1]
reversed(L) returns a listreverseiterator object which is fine for iterating over, but not so good if you really want a list
[::-1] is just a normal slice - the step is -1 so you get a copy starting from the end and ending with the start
