IndexError: invalid index of a 0-dim tensor. Use `tensor.item()` in Python or `tensor.item<T>()` in C++ to convert a 0-dim tensor to a number
报错的时候，是因为loss.data[0] 修改后变为loss.item() ...
原文：ValueError: Can't convert non-rectangular Python sequence to Tensor.
发生此报错的原因可能是python序列是非矩形的数据，即在某个维度上数据不能对齐 或者你在使用pandas的数据时直接调用，如： 将input data后加values就可以了： ...
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报错：invalid index of a 0-dim tensor. Use tensor.item() to convert a 0-dim tensor to a Python number
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IndexError: invalid index of a 0-dim tensor. Use tensor.item() to convert a 0-dim tensor to a Python number
将loss.data[0] 改为loss.item() ...
IndexError: invalid index of a 0-dim tensor. Use tensor.item() to convert a 0-dim tensor to a Python number
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