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 : //opt/imunify360/venv/lib64/python3.11/site-packages/pycares/__main__.py
import collections.abc
import pycares
import select
import socket
import sys


def wait_channel(channel):
    while True:
        read_fds, write_fds = channel.getsock()
        if not read_fds and not write_fds:
            break
        timeout = channel.timeout()
        if not timeout:
            channel.process_fd(pycares.ARES_SOCKET_BAD, pycares.ARES_SOCKET_BAD)
            continue
        rlist, wlist, xlist = select.select(read_fds, write_fds, [], timeout)
        for fd in rlist:
            channel.process_fd(fd, pycares.ARES_SOCKET_BAD)
        for fd in wlist:
            channel.process_fd(pycares.ARES_SOCKET_BAD, fd)


def cb(result, error):
    if error is not None:
        print('Error: (%d) %s' % (error, pycares.errno.strerror(error)))
    else:
        parts = [
            ';; QUESTION SECTION:',
            ';%s\t\t\tIN\t%s' % (hostname, qtype.upper()),
            '',
            ';; ANSWER SECTION:'
        ]

        if not isinstance(result, collections.abc.Iterable):
            result = [result]

        for r in result:
            txt = '%s\t\t%d\tIN\t%s' % (hostname, r.ttl, r.type)
            if r.type in ('A', 'AAAA'):
                parts.append('%s\t%s' % (txt, r.host))
            elif r.type == 'CAA':
                parts.append('%s\t%d %s "%s"' % (txt, r.critical, r.property, r.value))
            elif r.type == 'CNAME':
                parts.append('%s\t%s' % (txt, r.cname))
            elif r.type == 'MX':
                parts.append('%s\t%d %s' % (txt, r.priority, r.host))
            elif r.type == 'NAPTR':
                parts.append('%s\t%d %d "%s" "%s" "%s" %s' % (txt, r.order, r.preference, r.flags, r.service, r.regex, r.replacement))
            elif r.type == 'NS':
                parts.append('%s\t%s' % (txt, r.host))
            elif r.type == 'PTR':
                parts.append('%s\t%s' % (txt, r.name))
            elif r.type == 'SOA':
                parts.append('%s\t%s %s %d %d %d %d %d' % (txt, r.nsname, r.hostmaster, r.serial, r.refresh, r.retry, r.expires, r.minttl))
            elif r.type == 'SRV':
                parts.append('%s\t%d %d %d %s' % (txt, r.priority, r.weight, r.port, r.host))
            elif r.type == 'TXT':
                parts.append('%s\t"%s"' % (txt, r.text))

        print('\n'.join(parts))


channel = pycares.Channel()

if len(sys.argv) not in (2, 3):
    print('Invalid arguments! Usage: python -m pycares [query_type] hostname')
    sys.exit(1)

if len(sys.argv) == 2:
    _, hostname = sys.argv
    qtype = 'A'
else:
    _, qtype, hostname = sys.argv

try:
    query_type = getattr(pycares, 'QUERY_TYPE_%s' % qtype.upper())
except Exception:
    print('Invalid query type: %s' % qtype)
    sys.exit(1)

channel.query(hostname, query_type, cb)
wait_channel(channel)

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