Reverse a string without using reversed() or [::-1]?

Question

I came across a strange Codecademy exercise that required a function that would take a string as input and return it in reverse order. The only problem was you could not use

Answer 1

Just another option:

from collections import deque
def reverse(iterable):
    d = deque()
    d.extendleft(iterable)
    return ''.join(d)