test_tree_window.py

gistfile1.txt

from PySide6 import QtWidgets
import sys

from tests.test_tree import TreeModel

class TreeWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()

        self.tree_view = QtWidgets.QTreeView()
        self.model = TreeModel([["Item 1", "Description 1"],
                                ["Item 2", "Description 2"],
                                ["Item 3", "Description 3"]])
        self.tree_view.setModel(self.model)

        self.main_layout = QtWidgets.QVBoxLayout()
        self.main_layout.addWidget(self.tree_view)

        self.central_widget = QtWidgets.QWidget()
        self.central_widget.setLayout(self.main_layout)
        self.setCentralWidget(self.central_widget)

def main():
    app = QtWidgets.QApplication(sys.argv)
    window = TreeWindow()
    window.show()
    sys.exit(app.exec())

if __name__ == "__main__":
    main()