from __function__ import print_function 
import tensorflow as tf 
a=tf.constant(2)
b=tf.constant(3)
with tf.Session() as sess:
	print('sess run ... a+b result: %i' % sess.run(a+b))
	print('sess run ... a*b result: %i' % sess.run(a*b))

a = tf.placeholder(tf.int16)
b = tf.placeholder(tf.int16)

add=
 
tf.add(a,b)
multi=tf.multiply(a,b)
with tf.Session() as sess:
	print('sess run ... add result: %i' % sess.run(add,feed_dict={a:2,b:3}))
	print('sess run ... multi result: %i' % sess.run(multi,feed_dict={a:2,b:3}))

a=tf.constant([[2,3]])
b=tf.constant([[3],[1]])
re=tf.matmul(a,b)
with tf.Session() as
 
 sess:
	print('matrix multi result:',sess.run(re))