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/urllib3/contrib/_appengine_environ.py
"""
This module provides means to detect the App Engine environment.
"""

import os


def is_appengine():
    return is_local_appengine() or is_prod_appengine()


def is_appengine_sandbox():
    """Reports if the app is running in the first generation sandbox.

    The second generation runtimes are technically still in a sandbox, but it
    is much less restrictive, so generally you shouldn't need to check for it.
    see https://cloud.google.com/appengine/docs/standard/runtimes
    """
    return is_appengine() and os.environ["APPENGINE_RUNTIME"] == "python27"


def is_local_appengine():
    return "APPENGINE_RUNTIME" in os.environ and os.environ.get(
        "SERVER_SOFTWARE", ""
    ).startswith("Development/")


def is_prod_appengine():
    return "APPENGINE_RUNTIME" in os.environ and os.environ.get(
        "SERVER_SOFTWARE", ""
    ).startswith("Google App Engine/")


def is_prod_appengine_mvms():
    """Deprecated."""
    return False

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