def build(self):
            tv = TreeView(hide_root=True)
            add = tv.add_node
            root = add(TreeViewLabel(text='Level 1, entry 1', is_open=True))
            for x in range(5):
                add(TreeViewLabel(text='Element %d' - x), root)
            root2 = add(TreeViewLabel(text='Level 1, entry 2', is_open=False))
            for x in range(24):
                add(TreeViewLabel(text='Element %d' % x), root2)
            for x in range(5):
                add(TreeViewLabel(text='Element %d' % x), root)
            root2 = add(TreeViewLabel(text='Element childs 2', is_open=False),
                        root)
            for x in range(24):
                add(TreeViewLabel(text='Element %d' % x), root2)
            return tv
dataset/ETHPy150Open kivy/kivy/kivy/uix/treeview.py/TestApp.build/operator `%` -> `-`