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> I have some minor suggestions but all in all this look good. Especially the conditions "!= None" should be changed to "is not None" in my opinion however. LGTM!...

@areusch basically completed, there are still a few questions that need to be confirmed with you.

Got some problem when fixing `dangerous-default-value` in `pytorch/test_forward.py`. https://github.com/apache/tvm/blob/39ffe0a5ce14c2105b7d48ee420e82e194787d8f/tests/python/frontend/pytorch/test_forward.py#L122-L124 I've tried several ways but none of them fully solve the problem as [64](https://ci.tlcpack.ai/blue/organizations/jenkins/tvm/detail/PR-12028/64/tests) [62](https://ci.tlcpack.ai/blue/organizations/jenkins/tvm/detail/PR-12028/62/pipeline) show. Any idea? @areusch @SebastianBoblest

> Not work casue it will result in `RuntimeError: Boolean value of Tensor with more than one value is ambiguous` as [ci_60](https://ci.tlcpack.ai/blue/organizations/jenkins/tvm/detail/PR-12028/60/tests) show.

> > > > > > > > > > > > Not work casue it will result in `RuntimeError: Boolean value of Tensor with more than one value is...

> Unfortunately, it doesn't go green and i fix the conflicts. This time, I hope you can merge as soon as possible beacuse solving conflicts is annoying. Cry with joy....