def split(self, depth):
        """Split a name into a prefix and suffix at depth.

        @param depth: the number of labels in the suffix
        @type depth: int
        @raises ValueError: the depth was not >= 0 and <= the length of the
        name.
        @returns: the tuple (prefix, suffix)
        @rtype: tuple
        """

        l = len(self.labels)
        if depth == 0:
            return (self, dns.name.empty)
        elif depth == l:
            return (dns.name.empty, self)
        elif depth < 0 or depth > l:
            raise ValueError('depth must be >= 0 and <= the length of the name')
        return (Name(self[: -depth]), Name(self[-depth :]))
Split a name into a prefix and suffix at depth.

        @param depth: the number of labels in the suffix
        @type depth: int
        @raises ValueError: the depth was not >= 0 and <= the length of the
        name.
        @returns: the tuple (prefix, suffix)
        @rtype: tuple