Do not use or import the ABCs from `collections`, this is deprecated since Python 3.3, and in 3.9 it will stop working. These ABCs have moved to 'collections.abc' and should be used from this package.

PiperOrigin-RevId: 340678321

This enables support for Python 3.8, which changed behavior of `_asdict` to
return regular `dict` types.
https://docs.python.org/3/library/collections.html#collections.somenamedtuple._asdict

PiperOrigin-RevId: 337559550

This should be the last piece of migrating all code to the `tff.templates.MeasuredProcess` replacement.

PiperOrigin-RevId: 334231096

The name AnonymousTuple has been deprecated and
will soon be removed.

PiperOrigin-RevId: 323646450

PiperOrigin-RevId: 313413666

* Moved class and tests to `templates` package.
* Renamed usage of `computation_utils.IterativeProcess` in TFF to the new module.

PiperOrigin-RevId: 294680342

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PiperOrigin-RevId: 264872454

* Removed explicit calls to `str`.
* Updated to use `''.format()`.

PiperOrigin-RevId: 263601586

Improve error messages for IterativeProcess by making types easier to compare. This change puts each type on a fresh newline so they "line up", and prints the actual next_result_type rather than the full type in which it is embedded.

PiperOrigin-RevId: 262152799

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PiperOrigin-RevId: 249777136

This caused errors when the `weights` argument of the StatefulAggregateFn was
not specified, as tff.to_value(None) is not allowed in TFF.

Also add runtime typechecking consistent with pydoc message.

PiperOrigin-RevId: 248386764

PiperOrigin-RevId: 244269098

PiperOrigin-RevId: 242750562

Support state in the function used to do the federated_broadcast. This could allow, e.g., for an adaptive quantization scheme to be used. Also removes some older type-based tests, since we now have execution tests, and the type-based tests are likely to be brittle (needing to be updated due to changes in distant files).

PiperOrigin-RevId: 241843768

Allow stateful aggregation operators in model_delta_optimizer_processes like Federated Averaging. Allowing stateful aggregation functions to be applied to model deltas paves the way for using a differentially private average such as the GaussianAverageQuery of TensorFlow Privacy (where the state includes for example the Privacy Ledger).

PiperOrigin-RevId: 241628028

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PiperOrigin-RevId: 230655244

Implement a IterativeProcess utility class for pairing tff.Computations for initialization and sequence processing.

PiperOrigin-RevId: 227927203