szha commented on issue #18789:
URL:
https://github.com/apache/incubator-mxnet/issues/18789#issuecomment-669334140
```python
In [3]: from mxnet import nd
...: import mxnet as mx
...: x = mx.np.zeros((10,))
...: x.attach_grad()
...: mx.npx.set_np()
...: class Op(mx.autograd.Function):
...: def forward(self, x):
...: out = x + 1
...: return out
...:
...: def backward(self, grad):
...: grad_x = grad
...: return grad_x
...:
...: op = Op()
...: with mx.autograd.record():
...: y = op(x)
...: y.sum().backward()
...:
...: print(x.grad)
[1. 1. 1. 1. 1. 1. 1. 1. 1. 1.]
In [4]:
Do you really want to exit ([y]/n)?
```
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