tf20blog1a.py

y_hat = tf.constant(36, name='y_hat')            # Define y_hat constant. Set to 36.
y = tf.constant(39, name='y')                    # Define y. Set to 39
loss = tf.Variable((y - y_hat)**2, name='loss')  # Create a variable for the loss
init = tf.global_variables_initializer()         # When init is run later (session.run(init)),
                                                # the loss variable will be initialized and ready to be computed
with tf.Session() as session:                    # Create a session and print the output
    session.run(init)                            # Initializes the variables
    print(session.run(loss))                     # Prints the loss