QTreeWidget получение информации о элементе

from PyQt4 import QtCore, QtGui, uic
import sys
 
 
class UserApplication(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent=None)
        self.treeFilesWidget = QtGui.QTreeWidget(self)
        self.resize(300,300)
        item = QtGui.QTreeWidgetItem(['hello'])
        self.treeFilesWidget.addTopLevelItem(item)
        
 
 
        self.treeFilesWidget.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu)
        updateFiles = QtGui.QAction('Принт ячейку',self.treeFilesWidget)
        self.connect(updateFiles,
                     QtCore.SIGNAL('triggered()'),
                     self.function)
        self.treeFilesWidget.addAction(updateFiles)
 
        self.show()
 
    def function(self):
        pass #вывести ячейку
 
if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    qwe = UserApplication()
    sys.exit(app.exec())

from PyQt5 import QtWidgets, Qt
 
 
def clickme():
    index = tree.currentIndex().row()
    item = model.item(index)
    print(item.text())
    item.setIcon(icons[0])
 
 
app = Qt.QApplication([])
main_window = QtWidgets.QWidget()
 
btn = Qt.QPushButton("Click me", main_window)
btn.clicked.connect(clickme)
 
icons = (Qt.QIcon('tick_green.png'), Qt.QIcon('tick_red.png'))
model = Qt.QStandardItemModel()
model.setHorizontalHeaderLabels([u'Заголовок'])
 
for i in range(5):
    item = Qt.QStandardItem(f'text {i}')
    item.setIcon(icons[1])
    model.appendRow(item)
 
tree = QtWidgets.QTreeView(main_window)
tree.setModel(model)
 
grid = QtWidgets.QGridLayout(main_window)
grid.setContentsMargins(0, 0, 0, 0)
grid.addWidget(tree, 0, 0)
grid.addWidget(btn, 1, 0)
 
main_window.move(0, 0)
main_window.show()
app.exec_()