# -*- coding: utf-8 -*-
import tensorflow as tf
a = 3

创建变量

w = tf.Variable([[0.5, 1.0]]) #行向量
x = tf.Variable([[2.0],
[1.0]])

y = tf.matmul(w, x) #矩阵相乘
print(y)

Tensor("MatMul:0", shape=(1, 1), dtype=float32)

init_op = tf.global_variables_initializer() #获取初始化全局变量的对象
with tf.Session() as sess: #初始化要在会话中进行
sess.run(init_op) #初始化变量
print (y.eval()) #打印y的值

[[ 2.]]