Python 如何使用aiohttp获取图像并直接处理它而不保存它

我需要计算从CDN服务器下载的镜像的哈希值.使用同步库时，一切都运行得很好.我直接将请求的结果(Res)传递给Image.open()，并接收一个带有图像作为输出的对象(Img).

import requests
import imagehash
from PIL import Image

# sync
def get_picture():
    url = 'https://ae01.alicdn.com/kf/Sec174725eb944b4693342178da975d52z.jpg'
    res = requests.get(url, stream=True).raw
    img = Image.open(res)
    hash = imagehash.phash(img, hash_size=6)
    print(f'hash: {hash}')

但是我需要判断很多照片，并且需要异步执行请求，在这里我遇到了一个问题，因为我不能直接将带有图像的请求对象传输到Image.Open()，只有首先将其保存到文件，但这个选项不适合我(我不需要服务器上的文件).

import imagehash
from PIL import Image
from aiohttp import ClientSession
from config.settings import BASE_DIR

# async
async def get_aio_picture():
    url = 'https://ae01.alicdn.com/kf/Sec174725eb944b4693342178da975d52z.jpg'
    async with ClientSession() as session:
        async with session.get(url=url) as response:
            response.auto_decompress = False
            with open('picture.jpg', 'wb') as fd:
                async for line in response.content:
                    fd.write(line)
            img = Image.open(f'{BASE_DIR}/picture.jpg')
            hash = imagehash.phash(img, hash_size=6)
            print(f'hash: {hash}')


async def main():
    task = asyncio.create_task(get_aio_picture())
    await task


def aio_hash():
    asyncio.run(main())

如果我以直接将结果传递给Image.open()的方式更改函数代码:

async def get_aio_picture():
    url = 'https://ae01.alicdn.com/kf/Sec174725eb944b4693342178da975d52z.jpg'
    async with ClientSession() as session:
        async with session.get(url=url) as response:
            response.auto_decompress = False
            async for line in response.content:
                img = Image.open(line)
                hash = imagehash.phash(img, hash_size=6)
                print(f'hash: {hash}')

然后我得到错误:(

...
File "/home/.../main/services/aio/help.py", line 37, in get_aio_picture
    img = Image.open(line)
File "/home/.../env/lib/python3.10/site-packages/PIL/Image.py", line 3247, in open
    fp = builtins.open(filename, "rb")
ValueError: embedded null byte

如何更改代码以避免在磁盘上创建文件？ 帮帮我！