Display_data_from_files_Tree

import sys
from PySide6.QtWidgets import QApplication, QTreeWidget, QTreeWidgetItem

data = {"Project A": ["file_a.py", "file_a.txt", "something.xls"],
        "Project B": ["file_b.csv", "photo.jpg"],
        "Project C": ["file_c.jpeg", "photo.png"]}

app = QApplication()

tree = QTreeWidget()
tree.setColumnCount(2)
tree.setHeaderLabels(["Name", "Type"])

items = []
for key, values in data.items():
	item = QTreeWidgetItem([key])
	for value in values:
		ext=value.split(".")[-1].upper()
		child=QTreeWidgetItem([value, ext])
		item.addChild(child)
	items.append(item)
tree.insertTopLevelItems(0, items)

tree.show()
sys.exit(app.exec())