Currently all my functions are decorated with @tornado.gen.coroutine which i then yield. I want to move to the newer async/await.
To move to async does that mean that i need to start the Tornado with the asyncio IOLoop as shown in documentation:
from tornado.platform.asyncio import AsyncIOMainLoop
import asyncio
AsyncIOMainLoop().install()
asyncio.get_event_loop().run_forever()
I changed some co-routines to use async/await instead of yield this seemed to work on the old Tornado IOLoop why is that if i didn't start the Tornado engine explicitly with asyncio?
In my current code I have a place where I yield a list of coroutines:
responses=yield [wrap(httpClient,url) for url in somelist]
how could this line be achieved with await?
You do not need to use asyncio's event loop, Tornado can run native coroutines (defined with async def) using the Tornado event loop.
You can await a list of coroutines like:
await tornado.gen.multi([wrap(httpClient,url) for url in somelist])
More information about Tornado and native coroutines is in the docs.