@contextmanager
    def nested(*contexts):
        with ExitStack() as stack:
            yield tuple(stack.enter_context(c) for c in contexts)
Create a SimpleGridModel object.
dataset/ETHPy150Open tbielawa/bitmath/tests/test_query_device_capacity.py/nested--crossover with--dataset/ETHPy150Open enthought/pyface/pyface/ui/wx/grid/simple_grid_model.py/SimpleGridModel.__init__