我在进行GRU练习时创建了一个函数，以学习更多关于Python和GRU的知识。我似乎遇到了一个名称错误的问题。

我已经查阅了许多关于在Python中定义项目的文章，但我认为我已经在后续的代码中清楚地定义了这些项目。

    def workflow(EV_data, get_split, train_model, get_rmse,n_train = 250,n_test = 50,look_back = 1):    gX_train, gY_train, gX_test, gY_test, scaler, start_point = get_split(EV_data, n_train, n_test)    model = train_model(gX_train, gY_train, gX_test, gY_test)    RMSE, predictions = get_rmse(model, gX_test, gY_test, scaler, start_point, EV_data, n_train)return RMSE, predictions

错误：

NameError: name 'predictions' is not defined

回答：

所有内容都应该在你的函数定义块内。我尝试了这个方法，并且它正确地编译了：

def workflow(EV_data, get_split, train_model, get_rmse,n_train = 250,n_test = 50,look_back = 1):    gX_train, gY_train, gX_test, gY_test, scaler, start_point = get_split(EV_data, n_train, n_test)    model = train_model(gX_train, gY_train, gX_test, gY_test)    RMSE, predictions = get_rmse(model, gX_test, gY_test, scaler, start_point, EV_data, n_train)    return RMSE, predictions