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congzhangzh

opened on Sep 26, 2025

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like title！

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1. AlbertShown commented on Sep 26, 2025

   

   AlbertShown

   on Sep 26, 2025

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   WebUI supports it, it's implemented by default in some wrappers like Deno-WebUI because everything is async, but in Python-WebUI I think it should be done manually.

   To make your WebUI project support async try this:

   1 - initialize WebUI with async enabled

   # in your main start, initialize WebUI with async enabled
   # Config.asynchronous_response = number 5
   # More info: 
   # https://github.com/webui-dev/python-webui/blob/c4b55892baa9367dd7cd4005ab30542e81f954b4/PyPI/Package/src/webui/webui.py#L116
   
   set_config(Config.asynchronous_response, True)
   
   # Now, WebUI events will bypass the callback instant return, and wait forever for the async response trough any `e.return_xxx()`

   2 - Set your event async response

   # In your events call, make sure to call any `e.return_xxx()` to set your async response to the UI
   
   def myCallbackExample(e : webui.Event):
         # do your async operations...
         # Python may return right away a void response to C (WebUI), but WebUI will ignore it and wait for any `e.return_xxx()`
         e.return_int(123) # Now WebUI will pass the response to UI.

   Reacted by Cong Zhang
2. congzhangzh commented on Sep 26, 2025

   

   congzhangzh

   on Sep 26, 2025

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   Tks, Btw how you guys stop asyncio event loop from blocking, as main thread is waiting?

   webui.wait()

   I am the author of https://github.com/congzhangzh/webview_python , to make wait work, I even monkey patch python asyncio, like:

   https://github.com/congzhangzh/webview_python/tree/main/examples/async_with_asyncio_guest_run
3. congzhangzh commented on Sep 26, 2025

   

   congzhangzh

   on Sep 26, 2025

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   use multi thread?
4. AlbertShown commented on Sep 29, 2025

   

   AlbertShown

   on Sep 29, 2025

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   this project structure is different from your project structure because this one calls a C external library, while yours is directly using webview.

   However, code is here:
   https://github.com/webui-dev/python-webui/blob/c4b55892baa9367dd7cd4005ab30542e81f954b4/PyPI/Package/src/webui/webui.py#L1544C5-L1544C22

   Reacted by Cong Zhang

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