to.(device) AttributeError: ‘list‘ object has no attribute ‘to‘

 错误点：

 data, target = data.to(self.device), target.to(self.device)
AttributeError: 'list' object has no attribute 'to'

测试显示：print("6666666666666666666       ",target)

解决方案：将列表元素取出（即list类型转换成tensor类型，将[tensor[....], ...]的数据改为tensor[....], ...）在错误点前输入：target=torch.stack(target, dim=1)

target=torch.stack(target, dim=1)
data, target = data.to(self.device), target.to(self.device)

结果显示：通过