3.7 常量与变量
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node1 = tf.Variable(3.0,tf.float32,name="node1")
node2 = tf.Variable(4.0,tf.float32,name="node2")
result = tf.add(node1, node2, name='add')
sess = tf.Session()
#变量初始化
init = tf.global_variables_initializer()
sess.run(init)
print(sess.run(result))