Await never resolves in notebooks

[bnmajor]

I was hoping that someone might be able to help me out with a stumbling block that I have hit recently... We are trying to add support for the getter functions in itkwidgets, but trying to await the response results in a <FuturePromise Pending> that never resolves and a notebook cell that never exits. It seems that basically any ImJoy api call or plugin api call that needs to be awaited has this issue (can be reproduced in a notebook with the simple example below). I am wondering if I am missing or misunderstanding something or if this is maybe a bug. Thanks!

from imjoy_rpc import api

class ImJoyPlugin():
    async def setup(self):
        pass

    async def run(self, ctx):
        pass

api.export(ImJoyPlugin())

# https://imjoy.io/docs/#/api?id=apiecho
await api.echo('Hello World')

@oeway @thewtex

[oeway]

Unfortunately, we don't have a solution for this for now, due to how jupyter works. See here: ipython/ipykernel#65

Copy my notes here:

Please also note that there is a current limitation with jupyter notebook that the execution will be blocked if you try to run directly await in a cell, see this issue. Instead of doing await my_async_function() directly in a cell, you can do asyncio.ensure_future(my_async_function()).

[bnmajor]

Ah, I was afraid that was the case. This is not an imjoy-rpc issue so I will close this. Thanks for the clarification!