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sciter-sdk / pysciter

Python bindings for Sciter
https://sciter.com
MIT License
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How to call async python function from pysciter? [question] #62

Closed PieceOfGood closed 2 years ago

PieceOfGood commented 2 years ago

For example, I use aiohttp and tortoise-orm for most my develop. Now I use async wrapper own invention for Chrome DevTools protocol to build HTML-UI in some browser window. Through domain Runtime I receive notifications from the browser console, into which I send the names of functions serialized into a string and lists of their arguments that need to be called upon events in UI. And it works well. But if I need to write something simpler, for example, a widget for the desktop, then launching an entire browser for it seems very wasteful, but at the same time I just want HTML-UI.

As far as I can tell, the pysciter already has its own main loop. Could you provide a working example if this is possible?

pravic commented 2 years ago

I don't have much experience with asyncio, so it isn't obvious to make an example for this.

As far as I can tell, the pysciter already has its own main loop.

By the way, Sciter 5 (the one with Vulkan support) will be more asynchronous, it seems: https://github.com/c-smile/sciter-js-sdk/blob/c15de7010e733c6b8cdc49758b73662e51080b40/include/sciter-x-def.h#L492-L511

pravic commented 2 years ago

One option of the top of my head would be to run asyncio in a dedicated thread while running UI in the main thread.

asyncio.run_coroutine_threadsafe to help with that.

PieceOfGood commented 2 years ago

Thanks for the help. I recently found my old cefpython craft. There was a similar situation, the launch of the wrapper used its own event loop, so it was impossible to add another one. It turns out that I ran it in a separate thread and used queues to transmit commands. Basically, this is what you recommend above. Definitely it should work in this case as well.