def main(self):
        
        self.loop = urwid.MainLoop(self.view, self.palette,
            unhandled_input=self.unhandled_input)
        self.loop.run()
Raise an assertion if the elements list is invalid.
dataset/ETHPy150Open socketubs/pyhn/tests/treesample.py/ExampleTreeBrowser.main--crossover with--dataset/ETHPy150Open cidles/poio-api/src/poioapi/tests/test_data.py/TestDataStructureType.test__append_list