def pairs(seq):
    """Return a sequence in pairs.

    Arguments:
        seq (sequence): A sequence with an even number
            of elements. If the number is uneven, the
            last element will be ignored.

    Returns:
        A zip object with tuple pairs of elements.

    Example:
        >>> list(pairs([1,2,3,4]))
        [(1, 2), (3, 4)]
    """

    return zip(*[iter(seq)]*2)