tf_agents.utils.eager_utils.future_in_eager_mode

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Decorator that allow a function/method to run in graph and in eager modes.

tf_agents.utils.eager_utils.future_in_eager_mode(
    func_or_method
)

When applied in graph mode it calls the function and return its outputs. When applied in eager mode it returns a lambda function that when called returns the outputs.

@eager_utils.future_in_eager_mode
def loss_fn(x):
  v = tf.get_variable('v', initializer=tf.ones_initializer(), shape=())
  return v + x

with context.graph_mode():
  loss_op = loss_fn(inputs)
  loss_value = sess.run(loss_op)

with context.eager_mode():
  loss = loss_fn(inputs)
  # Now loss is a Future callable.
  loss_value = loss()