类型错误：“dict_values”对象不可下标

Question

best_params_train = dict(optimizer=optimizers[0], learning_rate=learning_rates[0],
                         cnn_train_type=cnn_train_types[0], 
                         cnn_arch=cnns_arch.values()[0],
                         dropout=dropouts[0])

它在 cnn_arch=cnns_arch.values()[0] 处给出错误 TypeError: 'dict_values' object is not subscriptable。我尝试转换为列表但没有成功。如何将上面的 dict(....) 转换为列表

exp_params_train = dict(optimizer=optimizers[1:], learning_rate=learning_rates[1:],
                        cnn_train_type=cnn_train_types[1:], dropout=dropouts[1:],
                        cnn_arch=cnns_arch.values())

Answer 1

恰恰相反，如果将dict_values对象转换为列表，它就会起作用：

cnn_arch=list(cnns_arch.values())[0]