【每天学习一点点】使用plot_model绘制网络模式失败

使用plot_model绘制网络模式失败。

import tensorflow as tf
fashion_mnist = tf.keras.datasets.mnist

(x_train, y_train), (x_test, y_test) = fashion_mnist.load_data()
x_train, x_test = x_train / 255.0, x_test / 255.0

model = tf.keras.models.Sequential([
    tf.keras.layers.Flatten(input_shape=(28, 28)),
    tf.keras.layers.Dense(128, activation='relu'),
    tf.keras.layers.Dropout(0.2),
    # tf.keras.layers.Dense(128, activation='relu'),
    # tf.keras.layers.Dropout(0.2),
    tf.keras.layers.Dense(10, activation='softmax')
])

loss_fn = tf.keras.losses.SparseCategoricalCrossentropy(from_logits=True)

model.compile(optimizer='adam',
              loss=loss_fn,
              metrics=['accuracy'])

model.fit(x_train, 
            y_train,
            epochs=1,
            batch_size=600,
            verbose=1)
model.evaluate(x_test, y_test, verbose=2)
model.summary()

tf.keras.utils.plot_model(model, "my_first_model.png")

　　

 

 出错提示如下：

'Failed to import pydot. You must install pydot'
ImportError: Failed to import pydot. You must install pydot and graphviz for `pydotprint` to work.

 解决：

1. https://graphviz.gitlab.io/  ，下载windows版本的安装包。安装。

2. 读代码，C:Userslj.huangAppDataRoamingPythonPython37site-packages ensorflow_corepythonkerasutilsvis_utils.py

try:
  # pydot-ng is a fork of pydot that is better maintained.
  import pydot_ng as pydot

3. 从上以来看，pydot-ng是最好的。

pip install pydot-ng

4.再试，可以了。