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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# -*- coding: utf-8 -*-
# daemon/pidfile.py
# Part of ‘python-daemon’, an implementation of PEP 3143.
#
# This is free software, and you are welcome to redistribute it under
# certain conditions; see the end of this file for copyright
# information, grant of license, and disclaimer of warranty.
""" Lockfile behaviour implemented via Unix PID files.
"""
from __future__ import (absolute_import, unicode_literals)
from lockfile.pidlockfile import PIDLockFile
class TimeoutPIDLockFile(PIDLockFile, object):
""" Lockfile with default timeout, implemented as a Unix PID file.
This uses the ``PIDLockFile`` implementation, with the
following changes:
* The `acquire_timeout` parameter to the initialiser will be
used as the default `timeout` parameter for the `acquire`
method.
"""
def __init__(self, path, acquire_timeout=None, *args, **kwargs):
""" Set up the parameters of a TimeoutPIDLockFile.
:param path: Filesystem path to the PID file.
:param acquire_timeout: Value to use by default for the
`acquire` call.
:return: ``None``.
"""
self.acquire_timeout = acquire_timeout
super().__init__(path, *args, **kwargs)
def acquire(self, timeout=None, *args, **kwargs):
""" Acquire the lock.
:param timeout: Specifies the timeout; see below for valid
values.
:return: ``None``.
The `timeout` defaults to the value set during
initialisation with the `acquire_timeout` parameter. It is
passed to `PIDLockFile.acquire`; see that method for
details.
"""
if timeout is None:
timeout = self.acquire_timeout
super().acquire(timeout, *args, **kwargs)
# Copyright © 2008–2019 Ben Finney <ben+python@benfinney.id.au>
#
# This is free software: you may copy, modify, and/or distribute this work
# under the terms of the Apache License, version 2.0 as published by the
# Apache Software Foundation.
# No warranty expressed or implied. See the file ‘LICENSE.ASF-2’ for details.
# Local variables:
# coding: utf-8
# mode: python
# End:
# vim: fileencoding=utf-8 filetype=python :