tensorflow2.0学习1

pip install tensorflow==2.0.0-alpha0 -i https://pypi.tuna.tsinghua.edu.cn/simple some-package

from __future__ import absolute_import, division, print_function
import tensorflow as tf

print(tf.__version__)

from __future__ import absolute_import, division, print_function

import tensorflow as tf


print(tf.__version__)

mnist = tf.keras.datasets.mnist

(x_train, y_train), (x_test, y_test) = 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(10, activation='softmax')
])

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

model.fit(x_train, y_train, epochs=5)

model.evaluate(x_test, y_test)