# Write a generator which takes a list (or any sequence)
# and returns items from the list in random order.

def randomized(seq):
    """Iterate over seq returning items in random order.

    Making a copy of the argument or mutating the argument is *not
    allowed*.

    >>> list(randomized('abcdefghi'))
    ['b', 'a', 'e', 'd', 'f', 'c', 'h', 'i', 'g']
    """
    ...