加载语句：
import tensorflow as tf
import numpy as np
import datetime
import matplotlib.pyplot as plt
from tensorflow.examples.tutorials.mnist import input_data
mnist = input_data.read_data_sets("MNIST_data/")处理语句：
sample_image = mnist.train.next_batch(1)[0] print(sample_image.shape) sample_image = sample_image.reshape([28, 28]) plt.imshow(sample_image, cmap='Greys') plt.show()
显示的图片如下：
