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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Directory :  /usr/lib/python3.6/site-packages/tuned/ppd/

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Current File : //usr/lib/python3.6/site-packages/tuned/ppd/config.py
from tuned.utils.config_parser import ConfigParser, Error
from tuned.exceptions import TunedException
import os

PPD_POWER_SAVER = "power-saver"
PPD_PERFORMANCE = "performance"

MAIN_SECTION = "main"
PROFILES_SECTION = "profiles"
DEFAULT_PROFILE_OPTION = "default"


class PPDConfig:
    def __init__(self, config_file):
        self.load_from_file(config_file)

    @property
    def default_profile(self):
        return self._default_profile

    @property
    def ppd_to_tuned(self):
        return self._ppd_to_tuned

    @property
    def tuned_to_ppd(self):
        return self._tuned_to_ppd

    def load_from_file(self, config_file):
        cfg = ConfigParser()

        if not os.path.isfile(config_file):
            raise TunedException("Configuration file '%s' does not exist" % config_file)
        try:
            cfg.read(config_file)
        except Error:
            raise TunedException("Error parsing the configuration file '%s'" % config_file)

        if PROFILES_SECTION not in cfg:
            raise TunedException("Missing profiles section in the configuration file '%s'" % config_file)
        self._ppd_to_tuned = dict(cfg[PROFILES_SECTION])

        if not all(isinstance(mapped_profile, str) for mapped_profile in self._ppd_to_tuned.values()):
            raise TunedException("Invalid profile mapping in the configuration file '%s'" % config_file)

        if len(set(self._ppd_to_tuned.values())) != len(self._ppd_to_tuned):
            raise TunedException("Duplicate profile mapping in the configuration file '%s'" % config_file)
        self._tuned_to_ppd = {v: k for k, v in self._ppd_to_tuned.items()}

        if PPD_POWER_SAVER not in self._ppd_to_tuned:
            raise TunedException("Missing power-saver profile in the configuration file '%s'" % config_file)

        if PPD_PERFORMANCE not in self._ppd_to_tuned:
            raise TunedException("Missing performance profile in the configuration file '%s'" % config_file)

        if MAIN_SECTION not in cfg or DEFAULT_PROFILE_OPTION not in cfg[MAIN_SECTION]:
            raise TunedException("Missing default profile in the configuration file '%s'" % config_file)

        self._default_profile = cfg[MAIN_SECTION][DEFAULT_PROFILE_OPTION]
        if self._default_profile not in self._ppd_to_tuned:
            raise TunedException("Unknown default profile '%s'" % self._default_profile)

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