哦阚阚: 你好，出现了和博主类似的问题“IndexError: Dimension out of range (expected to be in range of [-3, 2], but got 3)”也可以采用这个方法吗
RuntimeError: element 0 of tensors does not require grad and does not have a grad_fncpeterz: 其实是在前面设置过no_grad的原因，可以查查有没有写torch.no_grad()
IndexError: Dimension out of range (expected to be in range of [-1, 0], but got 1)Learn_Play: 如果文章的方法不行，可以试试这个：observation = observation.unsqueeze(0)observation是你的输入
RuntimeError: element 0 of tensors does not require grad and does not have a grad_fnweixin_54501803: 可能是计算到常数时不往下计算了
RuntimeError: element 0 of tensors does not require grad and does not have a grad_fnkmknknkn: 我也是，兄弟你解决了吗