Streamz with websocket not steaming any data about streamz

[martindurant]

Are you saying that the on_open, on_message and on_close functions do run, but print_result does not?

You might also be interested in Stream.from_websocket which listens for incoming connections. A streamz native (async) client version would look very similar.

[leahpence]

That is correct, I am not getting any data results window with streamz. Perhaps I am missing something on the way I use steamz code.....
When I am using python without streamz code all works good and print normal.

[martindurant]

I am afraid I don't know. You are not using any async streamz stuff here, so the simplified code is essentially

source = Stream()
sink = source.map(print_result)
source.emit(df) # repeated for different df

which does indeed print.

[leahpence]

Does Streamz work on Visual Studio Code.. or just in Jupiter Notebooks?

[martindurant]

The auto-updating visual output is a jupyter-widget thing I don't know if VSCode shows those properly or not. streamz plotting via hvplot can work in a variety of browser platforms, including a standalone webapp; but, again, I don't know what VSCode does.

However, streamz's internals will continue to work anywhere, including a simple terminal, so if output is to a file, printed, or some other side-effect, those will work anyway.