ccgx-example.py

#!/usr/bin/python -u

from functools import partial
import dbus
from dbus.mainloop.glib import DBusGMainLoop
import gobject

def track(name, value):
    # TODO: Do something with the value, for this example we just print it
    print "{} = {:.2f}".format(name, value["Value"])

def main():
    DBusGMainLoop(set_as_default=True)
    conn = dbus.SystemBus()

    conn.add_signal_receiver(partial(track, "power"),
            dbus_interface='com.victronenergy.BusItem',
            signal_name='PropertiesChanged',
            path="/Dc/Battery/Power",
            bus_name="com.victronenergy.system")

    gobject.MainLoop().run()


if __name__ == "__main__":
    main()