python - How do I get the current value of a Variable?

Question

Suppose we have a variable:

x = tf.Variable(...)

This variable can be updated during the training process using the assign() method.

What is the best way to get the current value of a variable?

I know we could use this:

session.run(x)

But I'm afraid this would trigger a whole chain of operations.

In Theano, you could just do

y = theano.shared(...)
y_vals = y.get_value()

I'm looking for the equivalent thing in TensorFlow.

question from:https://stackoverflow.com/questions/33679382/how-do-i-get-the-current-value-of-a-variable

Answer 1

In general, session.run(x) will evaluate only the nodes that are necessary to compute x and nothing else, so it should be relatively cheap if you want to inspect the value of the variable.

Take a look at this great answer https://stackoverflow.com/a/33610914/5543198 for more context.