python - QComboBox with autocompletion works in PyQt4 but not in PySide -

i've got combo box custom completer worked fine in pyqt4, isn't working in pyside.

i have verified new completer replacing qcombobox's built in completer because inline completion no longer occurring. when run pyside, completer doesn't popup filtered list of options.

i've tried ensuring text str or unicode avoid differences between pyqt api 1 qstrings , pyside's use of python unicode types. changing text types has had no effect on either pyqt or pyside's behavior (pyqt keeps working, pyside doesn't work).

here code:

from pyside import qtcore pyside import qtgui   #from pyqt4 import qtcore #from pyqt4 import qtgui   class advcombobox(qtgui.qcombobox):     def __init__(self, parent=none):         super(advcombobox, self).__init__(parent)          self.setfocuspolicy(qtcore.qt.strongfocus)         self.seteditable(true)          # add filter model filter matching items         self.pfiltermodel = qtgui.qsortfilterproxymodel(self)         self.pfiltermodel.setfiltercasesensitivity(qtcore.qt.caseinsensitive)         self.pfiltermodel.setsourcemodel(self.model())          # add completer, uses filter model         self.completer = qtgui.qcompleter(self.pfiltermodel, self)         # show (filtered) completions         self.completer.setcompletionmode(qtgui.qcompleter.unfilteredpopupcompletion)          self.setcompleter(self.completer)          # connect signals          def filter(text):             print "edited: ", text, "type: ", type(text)             self.pfiltermodel.setfilterfixedstring(str(text))          self.lineedit().textedited[unicode].connect(filter)         self.completer.activated.connect(self.on_completer_activated)      # on selection of item completer, select corresponding item combobox     def on_completer_activated(self, text):         print "activated"         if text:             print "text: ", text             index = self.findtext(str(text))             print "index: ", index             self.setcurrentindex(index)       # on model change, update models of filter , completer     def setmodel(self, model):         super(advcombobox, self).setmodel(model)         self.pfiltermodel.setsourcemodel(model)         self.completer.setmodel(self.pfiltermodel)       # on model column change, update model column of filter , completer     def setmodelcolumn(self, column):         self.completer.setcompletioncolumn(column)         self.pfiltermodel.setfilterkeycolumn(column)         super(advcombobox, self).setmodelcolumn(column)   if __name__ == "__main__":     import sys      app = qtgui.qapplication(sys.argv)      combo = advcombobox()      names = ['bob', 'fred', 'bobby', 'frederick', 'charles', 'charlie', 'rob']      # fill standard model of combobox     combo.additems(names)     combo.setmodelcolumn(0)     combo.resize(300, 40)     combo.show()      sys.exit(app.exec_()) 

i figured out while writing question...

it appears while pyside qcompleter documentation lists option initialize qcompleter model , parent, isn't working.

the solution set model of completer after initialized.

here working code:

from pyside import qtcore pyside import qtgui    class advcombobox(qtgui.qcombobox):     def __init__(self, parent=none):         super(advcombobox, self).__init__(parent)          self.setfocuspolicy(qtcore.qt.strongfocus)         self.seteditable(true)          # add filter model filter matching items         self.pfiltermodel = qtgui.qsortfilterproxymodel(self)         self.pfiltermodel.setfiltercasesensitivity(qtcore.qt.caseinsensitive)         self.pfiltermodel.setsourcemodel(self.model())          # add completer         self.completer = qtgui.qcompleter(self)         #set model qcompleter uses         # - in pyside doing separate step worked better         self.completer.setmodel(self.pfiltermodel)         # show (filtered) completions         self.completer.setcompletionmode(qtgui.qcompleter.unfilteredpopupcompletion)          self.setcompleter(self.completer)          # connect signals          def filter(text):             print "edited: ", text, "type: ", type(text)             self.pfiltermodel.setfilterfixedstring(str(text))          self.lineedit().textedited[unicode].connect(filter)         self.completer.activated.connect(self.on_completer_activated)      # on selection of item completer, select corresponding item combobox     def on_completer_activated(self, text):         print "activated"         if text:             print "text: ", text             index = self.findtext(str(text))             print "index: ", index             self.setcurrentindex(index)       # on model change, update models of filter , completer     def setmodel(self, model):         super(advcombobox, self).setmodel(model)         self.pfiltermodel.setsourcemodel(model)         self.completer.setmodel(self.pfiltermodel)       # on model column change, update model column of filter , completer     def setmodelcolumn(self, column):         self.completer.setcompletioncolumn(column)         self.pfiltermodel.setfilterkeycolumn(column)         super(advcombobox, self).setmodelcolumn(column)   if __name__ == "__main__":     import sys      app = qtgui.qapplication(sys.argv)      combo = advcombobox()      names = ['bob', 'fred', 'bobby', 'frederick', 'charles', 'charlie', 'rob']      # fill standard model of combobox     combo.additems(names)     combo.setmodelcolumn(0)     combo.resize(300, 40)     combo.show()      sys.exit(app.exec_())