Tensorflow学习： Placeholder占位符

本文注意：
1. placeholder应用与feed_dcit是绑定的
2. 在r0.12版本中tensorflow的乘法是tensorflow.multiply(x,y)

# -*- coding: utf-8 -*-
"""
Created on Wed May  3 11:05:30 2017
E-mail: Eric2014_Lv@sjtu.edu.cn
@author: DidiLv
"""


import tensorflow as tf

input1 = tf.placeholder(tf.float32) # float32 type variabvle by dfault
input2 = tf.placeholder(tf.float32)

output = tf.multiply(input1,input2) # need to be notice

with tf.Session() as sess:
    print(sess.run(output,feed_dict={input1:7, input2:2}))