import tensorflow as tf

a=tf.constant([1.0,2.0,3.0],name='input1')
b=tf.Variable(tf.random_uniform([3]),name='input2')
add=tf.add_n([a,b],name='addOP')
with tf.Session()   as sess:
   sess.run(tf.global_variables_initializer())
   writer=tf.summary.FileWriter("E://TensorBoard//test",sess.graph)
   print(sess.run(add))
   writer.close()