def humanize_size(size):
    """Create a nice human readable representation of the given number
    (understood as bytes) using the "KiB" and "MiB" suffixes to indicate
    kibibytes and mebibytes. A kibibyte is defined as 1024 bytes (as opposed to
    a kilobyte which is 1000 bytes) and a mibibyte is 1024**2 bytes (as opposed
    to a megabyte which is 1000**2 bytes).

    :param size: the number to convert
    :type size: int
    :returns: the human readable representation of size
    :rtype: str
    """
    for factor, format_string in ((1, '%i'),
                                  (1024, '%iKiB'),
                                  (1024 * 1024, '%.1fMiB')):
        if size / factor < 1024:
            return format_string % (size / factor)
    return format_string % (size / factor)