tensorflow: add tf.train.CheckpointOptions and other tf.train members. (#11327)

stubs/tensorflow/@tests/stubtest_allowlist.txt

@@ -85,3 +85,12 @@ tensorflow.io.SparseFeature.__new__
 
 # Metaclass inconsistency. The runtime metaclass is defined from c++ extension and is undocumented.
 tensorflow.io.TFRecordWriter
+
+# stubtest does not pass for protobuf generated stubs.
+tensorflow.train.Example.*
+tensorflow.train.BytesList.*
+tensorflow.train.Feature.*
+tensorflow.train.FloatList.*
+tensorflow.train.Int64List.*
+tensorflow.train.ClusterDef.*
+tensorflow.train.ServerDef.*

stubs/tensorflow/tensorflow/train/__init__.pyi

@@ -0,0 +1,74 @@
+from _typeshed import Incomplete
+from collections.abc import Callable
+from typing import Any, TypeVar
+from typing_extensions import Self
+
+import numpy as np
+import tensorflow as tf
+from tensorflow.core.example.example_pb2 import Example as Example
+from tensorflow.core.example.feature_pb2 import (
+    BytesList as BytesList,
+    Feature as Feature,
+    Features as Features,
+    FloatList as FloatList,
+    Int64List as Int64List,
+)
+from tensorflow.core.protobuf.cluster_pb2 import ClusterDef as ClusterDef
+from tensorflow.core.protobuf.tensorflow_server_pb2 import ServerDef as ServerDef
+from tensorflow.python.trackable.base import Trackable
+
+class CheckpointOptions:
+    experimental_io_device: None | str
+    experimental_enable_async_checkpoint: bool
+    # Uncomment when the stubs' TF version is updated to 2.15
+    # experimental_write_callbacks: None | list[Callable[[str], Any] | Callable[[], Any]]
+    enable_async: bool
+
+    def __init__(
+        self,
+        experimental_io_device: None | str = None,
+        experimental_enable_async_checkpoint: bool = False,
+        # Uncomment when the stubs' TF version is updated to 2.15
+        # experimental_write_callbacks: None | list[Callable[[str], Any] | Callable[[], Any]] = None,
+        enable_async: bool = False,
+    ) -> None: ...
+
+_T = TypeVar("_T", bound=list[str] | tuple[str] | dict[int, str])
+
+class ClusterSpec:
+    def __init__(self, cluster: dict[str, _T] | ClusterDef | ClusterSpec) -> None: ...
+    def as_dict(self) -> dict[str, list[str] | tuple[str] | dict[int, str]]: ...
+    def num_tasks(self, job_name: str) -> int: ...
+
+class _CheckpointLoadStatus:
+    def assert_consumed(self) -> Self: ...
+    def assert_existing_objects_matched(self) -> Self: ...
+    def assert_nontrivial_match(self) -> Self: ...
+    def expect_partial(self) -> Self: ...
+
+class Checkpoint:
+    def __init__(self, root: Trackable | None = None, **kwargs: Trackable) -> None: ...
+    def read(self, save_path: str, options: CheckpointOptions | None = None) -> _CheckpointLoadStatus: ...
+    def restore(self, save_path: str, options: CheckpointOptions | None = None) -> _CheckpointLoadStatus: ...
+    def save(self, file_prefix: str, options: CheckpointOptions | None = None) -> str: ...
+    # def sync(self) -> None: ...  # Uncomment when the stubs' TF version is updated to 2.15
+    def write(self, file_prefix: str, options: CheckpointOptions | None = None) -> str: ...
+
+class CheckpointManager:
+    def __init__(
+        self,
+        checkpoint: Checkpoint,
+        directory: str,
+        max_to_keep: int,
+        keep_checkpoint_every_n_hours: int | None = None,
+        checkpoint_name: str = "ckpt",
+        step_counter: tf.Variable | None = None,
+        checkpoint_interval: int | None = None,
+        init_fn: Callable[[], object] | None = None,
+    ) -> None: ...
+    def _sweep(self) -> None: ...
+
+def latest_checkpoint(checkpoint_dir: str, latest_filename: str | None = None) -> str: ...
+def load_variable(ckpt_dir_or_file: str, name: str) -> np.ndarray[Any, Any]: ...
+def list_variables(ckpt_dir_or_file: str) -> list[tuple[str, list[int]]]: ...
+def __getattr__(name: str) -> Incomplete: ...

stubs/tensorflow/tensorflow/train/experimental.pyi

@@ -0,0 +1,13 @@
+import abc
+from _typeshed import Incomplete
+from typing_extensions import Self
+
+from tensorflow.python.trackable.base import Trackable
+
+class PythonState(Trackable, metaclass=abc.ABCMeta):
+    @abc.abstractmethod
+    def serialize(self) -> str: ...
+    @abc.abstractmethod
+    def deserialize(self, string_value: str) -> Self: ...
+
+def __getattr__(name: str) -> Incomplete: ...