How to change the order of row in QtableWidget.

[yashi95]

Hi,

I want to know if we have some information in QtableWidget, and I have one up and down button so, how I will change the order of row while clicking on the up and down button.

[SGaist]

Hi,

Here you have a pretty simple implementation that you can take inspiration from.

[yashi95]

@SGaist
Thank you. I am a beginner in python and Here code is written in c++. Is a little bit difficult for me to understand. Can you please provide me with python? it will very helpful.

[yashi95]

@SGaist
Can you please help me how to replace "setItem(row, col, rowItems.at(col));" line in pyside2(python)?

I don't have idea about "rowItems.at(col))".

[jazzycamel]

@yashi95 In this example rowItems is a QList which in python would be simply be a list, so rowItems.at(col) in C++ would be rowItems[col] in python.

[yashi95]

@jazzycamel As per your suggesation i tried but i am getting bellow Error
self.studentTable.setItem(rowno, colmn, rowItems[colmn])
TypeError: 'PySide2.QtWidgets.QTableWidgetItem' object is not subscriptable

Below you can check my code which I tried. Please help me in this.

checkIndex = 0 
        indexes = [QPersistentModelIndex(
                    index) for index in self.studentTable.selectionModel().selectedRows()]
        for index in indexes:
            selIndex = index.row()
            insertIndex = selIndex - 1
        if selIndex != checkIndex and self.sharpOsaApplicationTable.item(0,0) is not None:
            sourceItems = self.takeRow(selIndex)
            destItems = self.takeRow(insertIndex)
            self.setRow(selIndex, destItems)
            self.setRow(insertIndex, sourceItems)

def takeRow(self, rowno):
    colmn = 0
    rowItems = []
    while colmn < self.studentTable.columnCount():
        rowItems = self.studentTable.takeItem(rowno, colmn)
        colmn = colmn + 1
        print (rowItems)
    return rowItems

def setRow(self, rowno, rowItems):
    colmn = 0
    print(rowItems)
    while colmn < self.studentTable.columnCount():
        self.studentTable.setItem(rowno, colmn, rowItems[colmn])
        colmn = colmn + 1

[JonB]

@yashi95 said in How to change the order of row in QtableWidget.:

rowItems = self.studentTable.takeItem(rowno, colmn)

How does this build an array/list in Python? It doesn't. And your print (rowItems) statement shows you that. So since your rowItems/return result is not a list/array, that's why later you get "not subscriptable" on rowItems[colmn], rowItems being a single QTableWidgetItem.

This is not a Qt issue, just a Python one.

[yashi95]

@JonB But I make it rowItems as list also
rowItems = []
while colmn < self.studentTable.columnCount():
rowItems = self.studentTable.takeItem(rowno, colmn)

Please can you suggest to me what I will do?

[JonB]

@yashi95
If you do not know how to append/add/insert items to a list/array in Python you won't get very far, you need to go find out how to do so.

[jsulm]

@yashi95 said in How to change the order of row in QtableWidget.:

Please can you suggest to me what I will do?

You will hopefully read documentation: https://docs.python.org/3/tutorial/datastructures.html
(hint: list.append(x))
And also keep in mind that Python is not strongly typed. The fact that you first assign an empty list to rowItems doesn't mean it will stay a list and you assign a value to it which is not a list as @JonB already explained.