How to delete QTreeWidgetItem

Question

Several webpages say that QTreeWidgetItem can be deleted by deleting or QTreeWidget.clearing. But my code sample below doesn\'t seem to do so. Am I doi

Answer 1

You're confusing tree items (i.e., tree nodes) with the widgets that a given item can contain.

The following example creates a QTreeWidget and adds two items to it: a top level item and a nested one. Removing the comments you can see how both of them are removed from the tree.

#!/usr/bin/env python
import sys
from PyQt4.QtGui import *

class MyMainWindow(QMainWindow):
    def __init__(self, parent=None):
        super(MyMainWindow, self).__init__(parent)
        self.tree = QTreeWidget(self)
        self.setCentralWidget(self.tree)
        self.tree.setHeaderLabel('funksoul')
        i = QTreeWidgetItem(self.tree, ['top level'])   
        self.tree.addTopLevelItem(i)
        j = QTreeWidgetItem(i ,['nested level'])
        #i.takeChild(0)
        #self.tree.takeTopLevelItem(0)

if __name__ == "__main__":
    app = QApplication(sys.argv)
    ui = MyMainWindow()
    ui.show()
    sys.exit(app.exec_())

For removing both types of items from the tree you need the items index. If you have a reference to the item you want to remove you can get the corresponding index with the indexOfTopLevelItem and indexOfChild functions.