def num_in_numbits(num, numbits):
    """Does the integer `num` appear in `numbits`?

    Returns:
        A bool, True if `num` is a member of `numbits`.
    """
    nbyte, nbit = divmod(num, 8)
    if nbyte >= len(numbits):
        return False
    return bool(numbits[nbyte] & (1 << nbit))