1.一开始采用官网上利用input_data来加载本地数据集的方法，但会报出下面的错误
No module named 'tensorflow.examples.tutorials'
并且官网上input_data.py又下载不下来
2.采用keras，一开始也是因为无法访问googlesource,导致无法加载mnist数据集。
解决方法：修改mnist.py，利用本地下载好的mnist数据集，直接讲mnist.py里路径path改成本地mnist数据集的路径
下附代码：
main.py
from __future__ import absolute_import, division, print_function, unicode_literals
import tensorflow as tf
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, verbose=2)
mnist.py
"""MNIST handwritten digits dataset.
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import numpy as np
from tensorflow.python.keras.utils.data_utils import get_file
from tensorflow.python.util.tf_export import keras_export
@keras_export('keras.datasets.mnist.load_data')
def load_data(path='mnist.npz'):
"""Loads the MNIST dataset.
Arguments:
path: path where to cache the dataset locally
(relative to ~/.keras/datasets).
Returns:
Tuple of Numpy arrays: `(x_train, y_train), (x_test, y_test)`.
License:
Yann LeCun and Corinna Cortes hold the copyright of MNIST dataset,
which is a derivative work from original NIST datasets.
MNIST dataset is made available under the terms of the
[Creative Commons Attribution-Share Alike 3.0 license.](
https://creativecommons.org/licenses/by-sa/3.0/)
"""
path = "./mnist.npz"
with np.load(path) as f:
x_train, y_train = f['x_train'], f['y_train']
x_test, y_test = f['x_test'], f['y_test']
return (x_train, y_train), (x_test, y_test)