an iterable of operations from which the backward graph
walk starts. If a list of tensors is given instead, the seed_ops are set
to be the generators of those tensors.
inclusive
if True the given seed_ops are also part of the resulting set.
within_ops
an iterable of tf.Operation within which the search is
restricted. If within_ops is None, the search is performed within
the whole graph.
within_ops_fn
if provided, a function on ops that should return True iff
the op is within the graph traversal. This can be used along within_ops,
in which case an op is within if it is also in within_ops.
stop_at_ts
an iterable of tensors at which the graph walk stops.
control_inputs
if True, control inputs will be used while moving backward.
Returns
A Python set of all the tf.Operation behind seed_ops.
Raises
TypeError
if seed_ops or within_ops cannot be converted to a list of
tf.Operation.