初识tensorflow placeholder

import tensorflow as tf

input1 = tf.placeholder(tf.float32)#创建传递参数

input2 = tf.placeholder(tf.float32)#创建传递参数

output = tf.multiply(input1,input2)

with tf.Session() as sess:

    print sess.run(output,feed_dict={input1:[7.],input2:[2.]})#feed_dic填入如需要传递的placeholder