tf.placeholder

#!/usr/bin/env python# -*- coding: utf-8 -*-# @Date    : 2017-11-30 20:22:37# @Author  : [e-mail]# @Link    : https://morvanzhou.github.io/tutorials/machine-learning/tensorflow/2-5-placeholde/# @Version : Placeholder 传入值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.]}))