def on_tuple(self, node):    # ('elts', 'ctx')
        return tuple(self.on_list(node))
test that use_macro and macro_block may
dataset/ETHPy150Open xraypy/xraylarch/lib/interpreter.py/Interpreter.on_tuple--crossover with--dataset/ETHPy150Open nalourie/django-macros/build/lib/macros/tests.py/MacrosTests.test_use_macro_with_macro_block