Qt for Python (PySide/Shiboken)

Heyho This is a follow up So my signals are working, but I am now struggling with the QAbstractTableModel So I have filters I apply but turning them On/Off and change the query Now I try to tell the Viewer, that the data is changed: self.dataChanged.emit(self.createIndex(0,0), self.createIndex(self.rowCount(None), self.columnCount(None)), None) But this crashes totally my design Somehow I do not really understand why this is happening or what would be the best way to give this hint, as I don't relly know, if I am adding or removing (I could make a rowCount difference but sounds odd)