晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //usr/lib/python3.6/site-packages/dnf/transaction.py
# -*- coding: utf-8 -*-

# transaction.py
# Managing the transaction to be passed to RPM.
#
# Copyright (C) 2013-2018 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.  You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.  Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#

from __future__ import absolute_import
from __future__ import unicode_literals

import libdnf.transaction

from dnf.i18n import _, C_

# :api - all action constants are considered an API

# per-package actions - from libdnf
PKG_DOWNGRADE = libdnf.transaction.TransactionItemAction_DOWNGRADE
PKG_DOWNGRADED = libdnf.transaction.TransactionItemAction_DOWNGRADED
PKG_INSTALL = libdnf.transaction.TransactionItemAction_INSTALL
PKG_OBSOLETE = libdnf.transaction.TransactionItemAction_OBSOLETE
PKG_OBSOLETED = libdnf.transaction.TransactionItemAction_OBSOLETED
PKG_REINSTALL = libdnf.transaction.TransactionItemAction_REINSTALL
PKG_REINSTALLED = libdnf.transaction.TransactionItemAction_REINSTALLED
PKG_REMOVE = libdnf.transaction.TransactionItemAction_REMOVE
PKG_UPGRADE = libdnf.transaction.TransactionItemAction_UPGRADE
PKG_UPGRADED = libdnf.transaction.TransactionItemAction_UPGRADED

# compatibility
PKG_ERASE = PKG_REMOVE

# per-package actions - additional
PKG_CLEANUP = 101
PKG_VERIFY = 102
PKG_SCRIPTLET = 103

# transaction-wide actions
TRANS_PREPARATION = 201
TRANS_POST = 202


# packages that appeared on the system
FORWARD_ACTIONS = [
    libdnf.transaction.TransactionItemAction_INSTALL,
    libdnf.transaction.TransactionItemAction_DOWNGRADE,
    libdnf.transaction.TransactionItemAction_OBSOLETE,
    libdnf.transaction.TransactionItemAction_UPGRADE,
    libdnf.transaction.TransactionItemAction_REINSTALL,
]


# packages that got removed from the system
BACKWARD_ACTIONS = [
    libdnf.transaction.TransactionItemAction_DOWNGRADED,
    libdnf.transaction.TransactionItemAction_OBSOLETED,
    libdnf.transaction.TransactionItemAction_UPGRADED,
    libdnf.transaction.TransactionItemAction_REMOVE,
# TODO: REINSTALLED may and may not belong here; the same NEVRA is in FORWARD_ACTIONS already
#    libdnf.transaction.TransactionItemAction_REINSTALLED,
]


ACTIONS = {
    # TRANSLATORS: This is for a single package currently being downgraded.
    PKG_DOWNGRADE: C_('currently', 'Downgrading'),
    PKG_DOWNGRADED: _('Cleanup'),
    # TRANSLATORS: This is for a single package currently being installed.
    PKG_INSTALL: C_('currently', 'Installing'),
    PKG_OBSOLETE: _('Obsoleting'),
    PKG_OBSOLETED: _('Obsoleting'),
    # TRANSLATORS: This is for a single package currently being reinstalled.
    PKG_REINSTALL: C_('currently', 'Reinstalling'),
    PKG_REINSTALLED: _('Cleanup'),
    # TODO: 'Removing'?
    PKG_REMOVE: _('Erasing'),
    # TRANSLATORS: This is for a single package currently being upgraded.
    PKG_UPGRADE: C_('currently', 'Upgrading'),
    PKG_UPGRADED: _('Cleanup'),

    PKG_CLEANUP: _('Cleanup'),
    PKG_VERIFY: _('Verifying'),
    PKG_SCRIPTLET: _('Running scriptlet'),

    TRANS_PREPARATION: _('Preparing'),
    # TODO: TRANS_POST
}


# untranslated strings, logging to /var/log/dnf/dnf.rpm.log
FILE_ACTIONS = {
    PKG_DOWNGRADE: 'Downgrade',
    PKG_DOWNGRADED: 'Downgraded',
    PKG_INSTALL: 'Installed',
    PKG_OBSOLETE: 'Obsolete',
    PKG_OBSOLETED: 'Obsoleted',
    PKG_REINSTALL: 'Reinstall',
    PKG_REINSTALLED: 'Reinstalled',
    # TODO: 'Removed'?
    PKG_REMOVE: 'Erase',
    PKG_UPGRADE: 'Upgrade',
    PKG_UPGRADED: 'Upgraded',

    PKG_CLEANUP: 'Cleanup',
    PKG_VERIFY: 'Verified',
    PKG_SCRIPTLET: 'Running scriptlet',

    TRANS_PREPARATION: 'Preparing',
    # TODO: TRANS_POST
}

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