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/lib/python3.11/site-packages/playhouse/fields.py
try:
    import bz2
except ImportError:
    bz2 = None
try:
    import zlib
except ImportError:
    zlib = None
try:
    import cPickle as pickle
except ImportError:
    import pickle

from peewee import BlobField
from peewee import buffer_type


class CompressedField(BlobField):
    ZLIB = 'zlib'
    BZ2 = 'bz2'
    algorithm_to_import = {
        ZLIB: zlib,
        BZ2: bz2,
    }

    def __init__(self, compression_level=6, algorithm=ZLIB, *args,
                 **kwargs):
        self.compression_level = compression_level
        if algorithm not in self.algorithm_to_import:
            raise ValueError('Unrecognized algorithm %s' % algorithm)
        compress_module = self.algorithm_to_import[algorithm]
        if compress_module is None:
            raise ValueError('Missing library required for %s.' % algorithm)

        self.algorithm = algorithm
        self.compress = compress_module.compress
        self.decompress = compress_module.decompress
        super(CompressedField, self).__init__(*args, **kwargs)

    def python_value(self, value):
        if value is not None:
            return self.decompress(value)

    def db_value(self, value):
        if value is not None:
            return self._constructor(
                self.compress(value, self.compression_level))


class PickleField(BlobField):
    def python_value(self, value):
        if value is not None:
            if isinstance(value, buffer_type):
                value = bytes(value)
            return pickle.loads(value)

    def db_value(self, value):
        if value is not None:
            pickled = pickle.dumps(value, pickle.HIGHEST_PROTOCOL)
            return self._constructor(pickled)

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