vban-cmd-python/examples/observer/__main__.py

import logging

import vban_cmd

logging.basicConfig(level=logging.INFO)


class App:
    def __init__(self, vban):
        self.vban = vban
        # register your app as event observer
        self.vban.observer.add(self)

    # define an 'on_update' callback function to receive event updates
    def on_update(self, event):
        if event == "pdirty":
            print("pdirty!")
        elif event == "ldirty":
            for bus in self.vban.bus:
                if bus.levels.isdirty:
                    print(bus, bus.levels.all)


def main():
    KIND_ID = "banana"

    with vban_cmd.api(KIND_ID, pdirty=True, ldirty=True) as vban:
        App(vban)

        while cmd := input("Press <Enter> to exit\n"):
            pass


if __name__ == "__main__":
    main()