flags2_await.py 文件源码

def get_flag(base_url, cc): # <2>
    url = '{}/{cc}/{cc}.gif'.format(base_url, cc=cc.lower())
    with closing(await aiohttp.request('GET', url)) as resp:
        if resp.status == 200:
            image = await resp.read()
            return image
        elif resp.status == 404:
            raise web.HTTPNotFound()
        else:
            raise aiohttp.HttpProcessingError(
                code=resp.status, message=resp.reason,
                headers=resp.headers)