Simple Tensorflow

import tensorflow as tf

import os
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'
a = tf.constant(5.0)
a
<tf.Tensor 'Const:0' shape=() dtype=float32>
b = tf.constant(3.0)
b
<tf.Tensor 'Const_1:0' shape=() dtype=float32>
c = a * b
# Lauch session
sess = tf.Session()
# Evaluate the tensor c
print(sess.run(c))
15.0