Any advice for working with Pyright/Pylance?

[travis-leith]

I was not able to find anything on the documentation regarding these tools. I like to have my code thoroughly checked by pyright. Pyright does not like the fact that output functions appear to be unused.

For example, from the basic-sidebar template.

def server(input, output, session):
    @render.plot
    def hist():
        hue = "species" if input.species() else None
        sns.kdeplot(df, x=input.var(), hue=hue)
        if input.show_rug():
            sns.rugplot(df, x=input.var(), hue=hue, color="black", alpha=0.25)

Here hist is unused according to Pyright.

One option: I could add # type: ignore to all my output functions.
Another option: I could exclude this rule from certain files somehow.

As I write this, it occurs to me my favourite option would be to use R style shiny and assign hist to output somehow. Is this possible? If so, it would seem less magical (potentially not using decorators) and would make Pyright happy. Is this possible?

[wch]

If you have a pyrightconfig.json file in your project, you can add:

  "reportUnusedFunction": "none"

Or you can add this at the top of your app.py file to have it ignore the rule just for that file.

# pyright: reportUnusedFunction=false

[travis-leith]

Thanks for the answer, and for the great library!
It would be great to come up with a way to explicitly tie the outputs together so that pyright can tell me if some function becomes unused in future.