def create_empty(xlen, ylen):
    """Creating a 2D list of 0s with attributable lengths.

    Args:
        xlen (number): desired x length (values)
        ylen (number): desired y length (rows)

    Returns:
        2D list: 2D list with 0s as values

    >>> e = create_empty(67, 24)
    >>> len(e)
    24
    >>> len(e[0])
    67
    """
    emptymap = []
    for num in range(ylen):
        maprow = []
        for num in range(xlen):
            maprow.append(0)
        emptymap.append(maprow)
    return emptymap