Automatically Create Qstackedwidget Pages Based On Tuple

I'm fairly new to python, and I feel this is an advanced question, with that in mind it might be out of the scope of Stack Exchange. Please bear with me. I have a QTreeWidget and Q

Solution 1:

The idea is to associate the index of the QStackedWidget with the QTreeWidgetItem, so we can use the setData() method of QTreeWidgetItem to save the index, and then recover it with the data() method:

import sys

from PyQt5.QtWidgets import *
from PyQt5.QtCore import *

class Widget(QWidget):
    def __init__(self, *args, **kwargs):
        QWidget.__init__(self, *args, **kwargs)
        self.tree = QTreeWidget(self)
        self.stack = QStackedWidget(self)
        lay = QHBoxLayout(self)
        lay.addWidget(self.tree)
        lay.addWidget(self.stack)

        for key, value in TreeList.items():
            root = QTreeWidgetItem(self.tree, [key])
            for val in value:
                item = QTreeWidgetItem([val])
                root.addChild(item)
                widget = QLabel(val,  self)
                ix = self.stack.addWidget(widget)
                item.setData(0, Qt.UserRole, ix)
        self.tree.expandAll()
        self.tree.itemClicked.connect(self.onItemClicked)

    def onItemClicked(self, item, column):
        val = item.data(0, Qt.UserRole)
        if val is not None:
            self.stack.setCurrentIndex(val)

TreeList = ({

    'Header1': ((
        'Item11',
        'Item12',
    )),

    'Header2': ((
        'Item21',
        'Item22'
    ))
})

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = Widget()
    w.show()
    sys.exit(app.exec_())