/tmp/snapshot-pyside-6.2-rel/pyside-setup/examples/dbus/listnames

(You can also check this code in the repository)

listnames.py

"""PySide6 port of the QtDBus listnames example from Qt v6.x"""

import sys
from PySide6.QtCore import QCoreApplication
from PySide6.QtDBus import (QDBusConnection, QDBusConnectionInterface,
                            QDBusInterface, QDBusReply)


def method1():
    print("Method 1:")

    session_bus = QDBusConnection.sessionBus()
    reply = session_bus.interface().registeredServiceNames()
    if not reply.isValid():
        print("Error:", reply.error().message())
        sys.exit(1)
    values = reply.value()
    for name in values:
        print(name)


def method2():
    print("Method 2:")

    session_bus = QDBusConnection.sessionBus()
    dbus_iface = QDBusInterface("org.freedesktop.DBus", "/org/freedesktop/DBus",
                                "org.freedesktop.DBus", session_bus)
    message = dbus_iface.call("ListNames")
    reply = QDBusReply(message)
    print(reply.value())


def method3():
    print("Method 3:")
    session_bus = QDBusConnection.sessionBus()
    print(session_bus.interface().registeredServiceNames().value())


if __name__ == "__main__":
    app = QCoreApplication()

    if not QDBusConnection.sessionBus().isConnected():
        print("Cannot connect to the D-Bus session bus.\n"
              "To start it, run:\n"
              "\teval `dbus-launch --auto-syntax`\n",
              file=sys.stderr)
        sys.exit(1)

    method1()
    method2()
    method3()