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　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。 . Prv8 Shell

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Directory : /lib/python2.7/site-packages/pip/commands/

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Current File : //lib/python2.7/site-packages/pip/commands/check.py

import logging

from pip.basecommand import Command
from pip.operations.check import check_requirements
from pip.utils import get_installed_distributions


logger = logging.getLogger(__name__)


class CheckCommand(Command):
    """Verify installed packages have compatible dependencies."""
    name = 'check'
    usage = """
      %prog [options]"""
    summary = 'Verify installed packages have compatible dependencies.'

    def run(self, options, args):
        dists = get_installed_distributions(local_only=False, skip=())
        missing_reqs_dict, incompatible_reqs_dict = check_requirements(dists)

        for dist in dists:
            key = '%s==%s' % (dist.project_name, dist.version)

            for requirement in missing_reqs_dict.get(key, []):
                logger.info(
                    "%s %s requires %s, which is not installed.",
                    dist.project_name, dist.version, requirement.project_name)

            for requirement, actual in incompatible_reqs_dict.get(key, []):
                logger.info(
                    "%s %s has requirement %s, but you have %s %s.",
                    dist.project_name, dist.version, requirement,
                    actual.project_name, actual.version)

        if missing_reqs_dict or incompatible_reqs_dict:
            return 1
        else:
            logger.info("No broken requirements found.")

haha - 2025