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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>C///</title>
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# Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose with or without fee is hereby granted,
# provided that the above copyright notice and this permission notice
# appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

import struct

import dns.exception
import dns.rdata
import dns.name

class PX(dns.rdata.Rdata):
    """PX record.

    @ivar preference: the preference value
    @type preference: int
    @ivar map822: the map822 name
    @type map822: dns.name.Name object
    @ivar mapx400: the mapx400 name
    @type mapx400: dns.name.Name object
    @see: RFC 2163"""

    __slots__ = ['preference', 'map822', 'mapx400']

    def __init__(self, rdclass, rdtype, preference, map822, mapx400):
        super(PX, self).__init__(rdclass, rdtype)
        self.preference = preference
        self.map822 = map822
        self.mapx400 = mapx400

    def to_text(self, origin=None, relativize=True, **kw):
        map822 = self.map822.choose_relativity(origin, relativize)
        mapx400 = self.mapx400.choose_relativity(origin, relativize)
        return '%d %s %s' % (self.preference, map822, mapx400)

    def from_text(cls,