Jupyter中asyncio.run() cannot be

问题：

import asyncio
async def main():
    print(1)
asyncio.run(main())

这种写法在jupyter中报错。
搜索之后发现是：

The problem in your case is that jupyter (IPython) is already running an event loop (for IPython ≥ 7.0):

大致就是jupyter 已经运行了loop，无需自己激活，采用上文中的await()调用即可
正确的写法如下：

async def main():
        print(1)
await main()