python报错AttributeError: 'str' object has no attribute 'type，如何解决？

python运行中遇到以下问题，朋友们，如何解决？

    train_data = get_train_data(unit=list(range(52)))
    train_g = construct_graph(train_data, neighbor=5)
    train_g = train_g.to("cuda:0")#此行报错
    train_g.edata['h_e'] = train_g.edata['h_e'].cuda()
    train_data = torch.Tensor(train_data)
    train_data = train_data.cuda()

报错：AttributeError: 'str' object has no attribute 'type'

这个问答https://datascience.stackexchange.com/questions/54907/model-cuda-in-pytorch写的很好，或许你可以尝试替换成

train_g.cuda()

或者

train_g.to(torch.device('cuda:0'))