My code is correct and I get a bummer that also says that my code is correct. What have I done wrong?

Hi!

I am currently doing this challenge and the question is this:

Alright, this one can be tricky but I'm sure you can do it. Create a function named combo that takes two ordered iterables. These could be tuples, lists, strings, whatever. Your function should return a list of tuples. Each tuple should hold the first item in each iterable, then the second set, then the third, and so on. Assume the iterables will be the same length. Check the code below for an example.

My code is at the bottom of the question.

My bummer sais this:

Bummer! Example output: combo('abc', 'def') => [('a', 'd'), ('b', 'e'), ('c', 'f')]

Can someone tell me what I did wrong?

Thanks!

Andrei

# combo([1, 2, 3], 'abc')
# Output:
# [(1, 'a'), (2, 'b'), (3, 'c')]
def combo(first, second):
    result = []
    for number in first:
        for letter in second:
            one = number, letter
            result.append(one)
    return result