tornado 执行 asyncio 异步报错 run_forever assert self._self_reading_future is None

报错信息：python38\lib\asyncio\windows_events.py", line 314 run_forever  assert self._self_reading_future is None

解决如下：

需要引入nest_asyncio，代码如下：

import nest_asyncio

nest_asyncio.apply()

封装执行多个异步方法并返回结果​

import asyncio
import nest_asyncio
from tornado.platform.asyncio import to_asyncio_future

nest_asyncio.apply()

async def asyncio_all_task(*fuc_list):
'''
执行多个异步方法
'''
tasks=[]
for t in fuc_list:
tasks.append(asyncio.ensure_future(t))

result= asyncio.get_event_loop().run_until_complete(to_asyncio_future(asyncio.gather(*tasks)))
# asyncio.get_event_loop().run_until_complete(asyncio.wait(tasks))
return result

def asyncio_all_task2(*fuc_list):
result=[]
loop = asyncio.get_event_loop()
res= loop.run_until_complete(asyncio.wait(fuc_list))
for r in res[0]:
result.append(r._result)

return result