Never mind, I found a way, which is really simple in fact. Being new to python, I didn’t know how to pass arguments to methods plugged to buttons. Here is how to do that for anyone who could have same issues
self.ui.btn_delete.clicked.connect(lambda: self.delete(fb)) def delete(self, fb): print('delete ') print(fb.dossier_source)
CLICK HERE to find out more related problems solutions.