def show_kv(self, instance, value):

        self.screen_manager.current = value

        child = self.screen_manager.current_screen.children[0]
        with open(child.kv_file, 'rb') as file:
            self.language_box.text = file.read().decode('utf8')
        Clock.unschedule(self.change_kv)
        self.change_kv()
        # reset undo/redo history
        self.language_box.reset_undo()
:type aws_access_key_id: string
dataset/ETHPy150Open kivy/kivy/examples/demo/kivycatalog/main.py/Catalog.show_kv--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/boto-2.38.0/boto/__init__.py/connect_fps