问如何从QListView中选择项目？

EN

class PaletteListModel(QtCore.QAbstractListModel):
    def __init__(self,colors = [[]],headers =[],parent=None):
        QtCore.QAbstractTableModel.__init__(self, parent)
        self.__colors=colors

    def columnCount(self,parent): 
        return 0


    def rowCount(self,parent): 
        return len(self.__colors)




    def data(self,index,role):
        if role==QtCore.Qt.EditRole:
            row=index.row()


            return self.__colors[row]
        if role==QtCore.Qt.FontRole:
            font=QtGui.QFont("Segoe UI")
            font.setPixelSize(20)

            return font
        if role == QtCore.Qt.ForegroundRole:
            brush = QtGui.QBrush()

            brush.setColor(QtGui.QColor("black"))
            return brush    
        if role ==QtCore.Qt.ToolTipRole:
            row=index.row()

            return "Mex code: "+self.__colors[row]

        if role==QtCore.Qt.DisplayRole:
            row=index.row()
            column=index.column()
            value=self.__colors[row]
            return value 
        if role==QtCore.Qt.DecorationRole:


            pixmap=QtGui.QPixmap(26,26)
            pixmap.load("E:\\Users\\HA\\workspace\\Projet\\copy-icon.png")
            icon=QtGui.QIcon(pixmap)
            return icon 
    def setData(self,index,value,role=QtCore.Qt.EditRole):
        if role==QtCore.Qt.EditRole:
            row =index.row()

            color=value

            self.__colors[row]=color
            self.dataChanged.emit(index,index)

            return False
    def flags(self, index):
        return QtCore.Qt.ItemIsEnabled|QtCore.Qt.ItemIsSelectable|QtCore.Qt.ItemIsUserCheckable

    cnx=Connexion()
    cnx.ouvrirConnexion()
    c = cnx.connexion
    cursor = cnx.connexion.cursor()            

    cursor.execute('SELECT titre From "Etude"')
    rows = cursor.fetchall()
    ListeE=[]
    for row in rows:

        ListeE.append(row[0])

    cnx.fermerConnexion()
    modele=PaletteListModel(ListeE)
    self.listEtude.setModel(modele)