How to print the value of a Tensor object in TensorFlow?

Question

I have been using the introductory example of matrix multiplication in TensorFlow.

matrix1 = tf.constant([[3., 3.]])
matrix2 = tf.constant([[2.],[2.]])
produ         


        

Answer 1

You can check the output of a TensorObject without running the graph in a session, by enabling eager execution.

Simply add the following two lines of code: import tensorflow.contrib.eager as tfe tfe.enable_eager_execution()

right after you import tensorflow.

The output of print product in your example will now be: tf.Tensor([[ 12.]], shape=(1, 1), dtype=float32)

Note that as of now (November 2017) you'll have to install a Tensorflow nightly build to enable eager execution. Pre-built wheels can be found here.