import tensorflow as tf

#With constants
a = tf.constant(2)
b = tf.constant(3)

with tf.Session() as sess:
    print "a=2, b=3"
    print "Addition with constants: %i" % sess.run(a+b)
    print "Multiplication with constants: %i" % sess.run(a*b)


#With variables
a = tf.placeholder(tf.types.int16)
b = tf.placeholder(tf.types.int16)

add = tf.add(a, b)
mul = tf.mul(a, b)

with tf.Session() as sess:
    print "Addition with variables: %i" % sess.run(add, feed_dict={a: 2, b: 3})
    print "Multiplication with variables: %i" % sess.run(mul, feed_dict={a: 2, b: 3})