Return a driver function that can advance a "bounced" sequence
    of values.

    .. code-block:: none

        seq = [0, 1, 2, 3]

        # bounce(seq) => [0, 1, 2, 3, 3, 2, 1, 0, 0, 1, 2, ...]

    Args:
        sequence (seq) : a sequence of values for the driver to bounce

def bounce(sequence):
    ''' Return a driver function that can advance a "bounced" sequence
    of values.

    .. code-block:: none

        seq = [0, 1, 2, 3]

        # bounce(seq) => [0, 1, 2, 3, 3, 2, 1, 0, 0, 1, 2, ...]

    Args:
        sequence (seq) : a sequence of values for the driver to bounce

    '''
    N = len(sequence)
    def f(i):
        div, mod = divmod(i, N)
        if div % 2 == 0:
            return sequence[mod]
        else:
            return sequence[N-mod-1]
    return partial(force, sequence=_advance(f))