code: def hook(self, m:nn.Module, i:Tensors, o:Tensors)->Tuple[Rank0Tensor,Rank0Tensor]:
          "Take the mean and std of `o`."
          return o.mean().item(),o.std().item(f hook(self, m:nn.Module, i:Tensors, o:Tensors)->Tuple[Rank0Tensor,Rank0Tensor]:
          "Take the mean and std of `o`."
          return o.mean().item(),o.std().item()
docs: Take the mean and std of `o`.