在创建clientsession时指定cookie_jar参数并实现一个持久性cookie存储器。

示例代码：

import aiohttp

class Cookies:
    def __init__(self):
        self._cookies = {}

    async def load_cookies(self, url):
        self._cookies = {}
        async with aiohttp.ClientSession() as session:
            async with session.get(url) as response:
                response_cookies = response.cookies
                for key, cookie in response_cookies.items():
                    self._cookies[key] = cookie.value

    async def save_cookies(self, url):
        async with aiohttp.ClientSession(cookie_jar=aiohttp.CookieJar()) as session:
            session.cookie_jar.update_cookies(self._cookies)
            async with session.get(url) as response:
                pass # do something

cookies = Cookies()

async def login():
    async with aiohttp.ClientSession() as session:
        async with session.post(login_url, data={"username": "myusername", "password": "mypassword"}) as response:
            await cookies.load_cookies(login_url)

async def do_something():
    await cookies.save_cookies(something_url)