This is an internal cleanup

PiperOrigin-RevId: 420896786

tensorflow_model_analysis/evaluators/metrics_plots_and_validations_evaluator.py

@@ -16,7 +16,7 @@
 import copy
 import datetime
 import numbers
-from typing import Any, Dict, Iterable, Iterator, List, NamedTuple, Optional, Tuple, Type, Union
+from typing import Any, Dict, Iterable, Iterator, List, NamedTuple, Optional, Tuple, Type, TypeVar, Union
 import apache_beam as beam
 import numpy as np
 
@@ -41,6 +41,9 @@
 from tfx_bsl.tfxio import tensor_adapter
 from tensorflow_metadata.proto.v0 import schema_pb2
 
+SliceKeyTypeVar = TypeVar('SliceKeyTypeVar', slicer.SliceKeyType,
+                          slicer.CrossSliceKeyType)
+
 _COMBINER_INPUTS_KEY = '_combiner_inputs'
 _DEFAULT_COMBINER_INPUT_KEY = '_default_combiner_input'
 _DEFAULT_NUM_JACKKNIFE_BUCKETS = 20
@@ -381,19 +384,20 @@ def _is_private_metrics(metric_key: metric_types.MetricKey):
 
 
 def _remove_private_metrics(
-    slice_key: slicer.SliceKeyOrCrossSliceKeyType,
-    metrics: metric_types.MetricsDict
-) -> Tuple[slicer.SliceKeyOrCrossSliceKeyType, metric_types.MetricsDict]:
+    slice_key: SliceKeyTypeVar, metrics: metric_types.MetricsDict
+) -> Tuple[SliceKeyTypeVar, metric_types.MetricsDict]:
   return (slice_key,
           {k: v for (k, v) in metrics.items() if not _is_private_metrics(k)})
 
 
 @beam.ptransform_fn
 def _AddCrossSliceMetrics(  # pylint: disable=invalid-name
-    sliced_combiner_outputs: beam.pvalue.PCollection,
+    sliced_combiner_outputs: beam.pvalue.PCollection[Tuple[
+        slicer.SliceKeyType, metric_types.MetricsDict]],
     cross_slice_specs: Optional[Iterable[config_pb2.CrossSlicingSpec]],
     cross_slice_computations: List[metric_types.CrossSliceMetricComputation],
-) -> Tuple[slicer.SliceKeyOrCrossSliceKeyType, metric_types.MetricsDict]:
+) -> beam.pvalue.PCollection[Tuple[slicer.SliceKeyOrCrossSliceKeyType,
+                                   metric_types.MetricsDict]]:
   """Generates CrossSlice metrics from SingleSlices."""
 
   def is_slice_applicable(
@@ -495,8 +499,8 @@ def _AddDerivedCrossSliceAndDiffMetrics(  # pylint: disable=invalid-name
     derived_computations: List[metric_types.DerivedMetricComputation],
     cross_slice_computations: List[metric_types.CrossSliceMetricComputation],
     cross_slice_specs: Optional[Iterable[config_pb2.CrossSlicingSpec]] = None,
-    baseline_model_name: Optional[str] = None
-) -> beam.PCollection[Tuple[slicer.SliceKeyType, metric_types.MetricsDict]]:
+    baseline_model_name: Optional[str] = None) -> beam.PCollection[Tuple[
+        slicer.SliceKeyOrCrossSliceKeyType, metric_types.MetricsDict]]:
   """A PTransform for adding cross slice and derived metrics.
 
   This PTransform uses the input PCollection of sliced metrics to compute
@@ -564,11 +568,11 @@ def add_diff_metrics(
 
 
 def _filter_by_key_type(
-    sliced_metrics_plots_attributions: Tuple[slicer.SliceKeyType,
+    sliced_metrics_plots_attributions: Tuple[SliceKeyTypeVar,
                                              Dict[metric_types.MetricKey, Any]],
     key_type: Type[Union[metric_types.MetricKey, metric_types.PlotKey,
                          metric_types.AttributionsKey]]
-) -> Tuple[slicer.SliceKeyType, Dict[metric_types.MetricKey, Any]]:
+) -> Tuple[SliceKeyTypeVar, Dict[metric_types.MetricKey, Any]]:
   """Filters metrics and plots by key type."""
   slice_value, metrics_plots_attributions = sliced_metrics_plots_attributions
   output = {}