"""
    Assuming all lists have the same length
    >>> zip_lists([[1, 2, 3], [4, 5, 6], [7, 8, 9]])
    [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
    >>> zip_lists([[1, 2], [3, 4], [5, 6], [7, 8]])
    [[1, 3, 5, 7], [2, 4, 6, 8]]
"""
Zip as a list comprehension