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Basic loop to train a model.

Calls train_step_fn in a loop to train a model. The function is called as:

train_step_fn(session, *args, **kwargs)

It is passed a tf.compat.v1.Session in addition to args and kwargs. The function typically runs one training step in the session.

supervisor tf.compat.v1.train.Supervisor to run the training services.
train_step_fn Callable to execute one training step. Called repeatedly as train_step_fn(session, *args **kwargs).
args Optional positional arguments passed to train_step_fn.
kwargs Optional keyword arguments passed to train_step_fn.
master Master to use to create the training session. Defaults to "" which causes the session to be created in the local process.