tensorflow 在有占位符 tf.placeholder时 ，需要用 feed_dict喂入数据。
import tensorflow as tf input1 = 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]}))
原文：https://www.cnblogs.com/gaona666/p/12613607.html