import warnings
warnings.simplefilter(action='ignore')
import tensorflow as tf
width = tf.placeholder('int32', name='width')
height = tf.placeholder('int32', name='height')
area = tf.multiply(width, height, name='area')
with tf.Session() as sess:
sess.run(tf.global_variables_initializer())
print('area:', sess.run(area, feed_dict={width: 6, height: 8}))
area: 48
tf.summary.merge_all() # 将所有要显示在 TensorBoard 的数据整合
train_writer = tf.summary.FileWriter('log/graph_area', sess.graph)