qt tablewidget中单个和批量删除代码如下（部分）截图如下

def coltable(self):#行删除
    row=self.downwidget.currentRow()
    select=self.downwidget.isItemSelected(
        self.downwidget.currentItem())#是否选中一行
    if row!=-1 and select!=False:
        msg=QtGui.QMessageBox(self)
        text=self.downwidget.currentItem().text()
        text=unicode(text)
        msg.setText(u'是否要删除第{0}个,删除的名称为:{1}'.
                    format(QtCore.QString.number(row),text))
        msg.setWindowTitle(u'提示')
        yes=msg.addButton('Yes',msg.AcceptRole)
        no=msg.addButton('No',msg.AcceptRole)
        msg.exec_()
        yn=msg.clickedButton()
        if yn==yes :
            self.downwidget.removeRow(self.downwidget.currentRow())
        elif yn==no:
            pass
    else:
        QtGui.QMessageBox.information(self,u'单个删除',u'表格中都没有了,你还要删除的结果是:'+str(row))

@QtCore.pyqtSlot()
def Batchdelete(self):#批量删除
    self.downwidget.setFocus()
    select=self.downwidget.selectedItems()
    if select:
        while select:
            row=self.downwidget.row(select[0])
            self.downwidget.removeRow(row)
            select=self.downwidget.selectedItems()
    else:
        QtGui.QMessageBox.information(self,u'批量删除',u'表格中都没有了,你还要删除?')