Function check

imperative/python/test/unit/core/test_autodiff.py:177–189

(f)

def test_release():
    def check(f):
        n = 0
        d = None
        gc.disable()
        try:
            for i in range(3):
                f()
                m = len(gc.get_objects())
                d = m - n
                n = m
            assert d == 0
        finally:
            gc.enable()

    x = mge.Tensor([0.0])
    dy = mge.Tensor(np.ones_like(x.numpy()))