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

Here is one using a list as a stack:

def reverse(s):
  rev = [_t for _t in s]
  t = ''
  while len(rev) != 0:
    t+=rev.pop()
  return t