AttributeError: 'MemoryBank' object has no attribute '_backward_hooks'

当出现"AttributeError: 'MemoryBank' object has no attribute '_backward_hooks'"这个错误时，它通常表示在MemoryBank对象中找不到_backward_hooks属性。这个错误通常是由于使用了过时的pytorch版本导致的。

解决这个问题的方法之一是将pytorch更新到最新版本。另一种解决方法是在程序开头添加一些兼容性代码。具体地说，你可以使用以下代码片段来解决此问题：

import torch._utils

try:
    torch._utils._rebuild_tensor_v2
except AttributeError:
    def _rebuild_tensor_v2(storage, storage_offset, size, stride, requires_grad, backward_hooks):
        tensor = torch._utils._rebuild_tensor(storage, storage_offset, size, stride)
        tensor.requires_grad = requires_grad
        tensor._backward_hooks = backward_hooks
        return tensor

    torch._utils._rebuild_tensor_v2 = _rebuild_tensor_v2

这段代码会为旧版本的pytorch添加一个_rebuild_tensor_v2函数，以解决_backward_hooks属性缺失的问题。

另外，当自定义的loss函数在调用loss.backward()时报错，并且经过检查感觉没有问题时，可能是在初始化的时候忘记添加self关键字。请确保在自定义loss函数的初始化方法中正确地添加了self关键字。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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