获取QTableWidget中所有已选行的行号

def getRow(self):
        self.selectedRow = list()
        item = self.`qtablewidget`.selectedItems()
        for i in item:
            if self.`qtablewidget`.indexFromItem(i).row() not in self.selectedRow:
                self.selectedRow.append(self.twFile.indexFromItem(i).row())