[PyQt] Problem with signal and slot arguments

[s.achterop at rug.nl]

Hello list,

I am porting the lowenergyscanner example from qt5/qtconnectivity to PyQt5.
This as a first step to my own BLE app. I have a few problems with it.

First a problem with signals and slots.
The C++ code snippets were:

     void addDevice(const QBluetoothDeviceInfo&);

...

     connect(discoveryAgent, &QBluetoothDeviceDiscoveryAgent::deviceDiscovered,
             this, &Device::addDevice);
...

void Device::addDevice(const QBluetoothDeviceInfo &info)
{
     if (info.coreConfigurations() & QBluetoothDeviceInfo::LowEnergyCoreConfiguration)
         setUpdate("Last device added: " + info.name());
}

Converted to PyQt5:

         self.discoveryAgent = QtBt.QBluetoothDeviceDiscoveryAgent()
         self.discoveryAgent.deviceDiscovered.connect(self.addDevice)

     @pyqtSlot()
     def addDevice(self, info):
         if info.coreConfigurations() & QtBt.QBluetoothDeviceInfo.LowEnergyCoreConfiguration:
             self.setUpdate(f'Last device added: {info.name}')

Running this gets me the following error:

   TypeError: addDevice() missing 1 required positional argument: 'info'

With ipython3 this seems to be a warning, with python3 the progam aborts immediately.

It seems that the slot is being called without the info argument, but signal
   QBluetoothDeviceDiscoveryAgent().deviceDiscovered
does have the argument.

What am I doing wrong here?

   Thanks in advance,
      Sietse