为什么print不出 求解

import aiohttp


async def download():
    pass


async def main():
    url = 'https://dushu.baidu.com/api/pc/getCatalog?data={"book_id":"4306063500"}'
    head = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/'
                      '100.0.4896.60 Safari/537.36 Edg/100.0.1185.29',
        'referer': 'https: // cn.bing.com /'
    }
    async with aiohttp.ClientSession() as session:
        async with session.get(url=url, head=head) as resp:
            dic = await resp.json()
            print(dic)


if __name__ == '__main__':
    main()

为什么print不显示呢！求解

如果你报错TypeError: An asyncio.Future, a coroutine or an awaitable is required这个，这个你就搜搜可以解决，下面已经可以提取你想要的了（可能你spider缺点东西会出现这个报错）

import aiohttp
import asyncio

async def download():
    pass
 
 
async def main():
    url = 'https://dushu.baidu.com/api/pc/getCatalog?data={"book_id":"4306063500"}'
    head = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/'
                      '100.0.4896.60 Safari/537.36 Edg/100.0.1185.29',
        'referer': 'https: // cn.bing.com /'
    }
    print(head)
    async with aiohttp.ClientSession() as session:
        async with session.get(url=url) as resp:
            dic = await resp.json()
            print(dic)
 
 
if __name__ == '__main__':
    asyncio.run(main(), debug=True)

还有，能给我发发网址你从哪看到 async with session.get(url=url) as resp:这一步里面有head的么，我看了看源码是没有这个参数的，但是里面有个**kwargs