小编Ken*_*Lee的帖子

您好，我试图根据以下代码运行模型拟合，但不知何故它一直说

类型错误：“NoneType”对象不可调用。不确定我哪一部分做错了。这是

我的优化培训过程的一部分。我在这里迷失了...运行此类 model.fit 是否有最低要求？

请在这件事上给予我帮助！

    import tensorflow as tf
    from tensorflow.keras import layers
    
    from tensorflow.keras import datasets
    
    (train_x, train_y), (test_x, test_y) = datasets.mnist.load_data()
    
    inputs = layers.Input((28, 28, 1))
    net = layers.Conv2D(32, (3, 3), padding ='SAME')(inputs)
    net = layers.Activation('relu')(net)
    net = layers.Conv2D(32, (3, 3), padding ='SAME')(net)
    net = layers.Activation('relu')(net)
    net = layers.MaxPooling2D(pool_size=(2, 2))(net)
    net = layers.Dropout(0.25)(net)
    
    net = layers.Conv2D(64, (3, 3), padding ='SAME')(net)
    net = layers.Activation('relu')(net)
    net = layers.Conv2D(64, (3, 3), padding ='SAME')(net)
    net = layers.Activation('relu')(net)
    net = layers.MaxPooling2D(pool_size=(2, 2))(net) …