tensorflow之feed用法

feed用于tensorflow中数据的输入，与placeholder上下呼应，形成数据传递之功能

import tensorflow as tfinput1 = tf.placeholder(tf.float32)input2 = tf.placeholder(tf.float32)output = tf.multiply(input1,input2)with tf.Session() as sess:    print(sess.run(output,feed_dict={input1:7.,input2:2.}))