[PyQt] How to process QDBusPendingCallWatcher results?

[Evade Flow]

> Sorry, my mistake - QDBusPendingReply, not QPyDBusPendingReply...

Ah, okay---yeah, that works great, thanks! I had a couple minor typos in
my example. Appending a complete, working version below, in case it's
helpful to someone else (possibly a future version of me! :-}) It should
work on most current Linux distributions, though you might need to
replace 'sda1' with a different partition name...

----------

from PyQt4 import QtCore, QtDBus

class DeviceInterface(QtDBus.QDBusAbstractInterface):

    def __init__(self, service, path, connection, parent=None):
        super().__init__(service, path, 'org.freedesktop.UDisks.Device',
                         connection, parent)

    @QtCore.pyqtSlot(QtDBus.QDBusArgument)
    def callFinishedSlot(self, call):
        reply = QtDBus.QDBusPendingReply(call)
        if reply.isError():
            print(reply.error().message())
        else:
            print("  PID        UID     COMMAND")
            print("-------    -------   ------------------------------------")
            for pid, uid, cmd in reply.argumentAt(0):
                print("{0:>7d}    {1:>7d}   {2}".format(pid, uid, cmd))

if __name__ == '__main__':
    import sys
    app = QtCore.QCoreApplication(sys.argv)

    dev = DeviceInterface('org.freedesktop.UDisks',
                          '/org/freedesktop/UDisks/devices/sda1',
                          QtDBus.QDBusConnection.systemBus(), app)

    async = dev.asyncCall("FilesystemListOpenFiles");
    watcher = QtDBus.QDBusPendingCallWatcher(async, dev)
    watcher.finished.connect(dev.callFinishedSlot)
    sys.exit(app.exec_())


On Mon, Aug 13, 2012 at 10:00 AM, Phil Thompson
<phil at riverbankcomputing.com> wrote:
> On Mon, 13 Aug 2012 09:41:44 -0400, Evade Flow <evadeflow at gmail.com>
> wrote:
>>> Try this...
>>>
>>>     def callFinishedSlot(self, call):
>>>         reply = QtDBus.QPyDBusPendingReply(call)
>>
>> Thanks, Phil. It doesn't work for me yet, I'm getting:
>>
>>>>> call
>> <PyQt4.QtDBus.QDBusPendingCallWatcher object at 0x9e9538c>
>>>>> reply = QtDBus.QPyDBusPendingReply(call)
>> Traceback (most recent call last):
>>   File "<string>", line 1, in <fragment>
>> builtins.AttributeError: 'module' object has no attribute
>> 'QPyDBusPendingReply'
>>
>> I'm now looking through the build setup to see whether there's some
>> config setting I missed that is keeping the qpy stuff from getting
>> built. Any suggestions? (I built from the PyQt4.9.4 release tarball; do
>> I need to use a development snapshot instead?)
>
> Sorry, my mistake - QDBusPendingReply, not QPyDBusPendingReply. (The
> latter is the internal C++ class but it's exposed as the former.)
>
> Phil