Feed Dictionary

import tensorflow as tf
import os

# Just disables the warning, doesn't enable AVX/FMA
os.environ['TF_CPP_MIN_LOG_LEVEL'] = '2'

a = tf.placeholder(tf.float32)
b = tf.placeholder(tf.float32)
c = tf.multiply(a, b)

with tf.Session() as sess:
    print(sess.run([c], feed_dict={a:[2], b: [3]}))