def __init__(self, parent=None):
        """Initialize a new reftrack sort filter model

        :param parent: the parent object
        :type parent: :class:`QtCore.QObject`
        :raises: None
        """
        super(ReftrackSortFilterModel, self).__init__(parent)
        # lists of forbidden values for different attributes
        self._forbidden_status = []
        self._forbidden_types = []
        self._forbidden_uptodate = []
        self._forbidden_alien = []
def __init__ ( self , parent = None ) : super ( ReftrackSortFilterModel , self ) . __init__ ( parent ) self . _forbidden_status = [ ] self . _forbidden_types = [ ] self . _forbidden_uptodate = [ ] self . _forbidden_alien = [ ]
Initialize a new reftrack sort filter model

        :param parent: the parent object
        :type parent: :class:`QtCore.QObject`
        :raises: None