[keras/engine/base_layer.py,keras/engine/base_layer_utils.py,keras/en…

…gine/base_layer_v1.py,keras/engine/base_preprocessing_layer.py,keras/engine/data_adapter.py,keras/engine/functional.py,keras/engine/input_layer.py,keras/engine/training.py,keras/engine/training_v1.py] Standardise docstring usage of "Default to"

keras/engine/base_layer.py

@@ -458,7 +458,7 @@ def __init__(
 
         # Whether the layer will track any layers that is set as attribute on
         # itself as sub-layers, the weights from the sub-layers will be included
-        # in the parent layer's variables() as well.  Default to True, which
+        # in the parent layer's variables() as well.  Defaults to `True`, which
         # means auto tracking is turned on. Certain subclass might want to turn
         # it off, like Sequential model.
         self._auto_track_sub_layers = True
@@ -3830,9 +3830,9 @@ def __init__(
           force_generator: boolean, default to False, whether to force the
             RandomGenerator to use the code branch of tf.random.Generator.
           rng_type: string, the rng type that will be passed to backend
-            RandomGenerator. Default to `None`, which will allow RandomGenerator
-            to choose types by itself. Valid values are "stateful", "stateless",
-            "legacy_stateful".
+            RandomGenerator. `None` will allow RandomGenerator to choose
+            types by itself. Valid values are "stateful", "stateless",
+            "legacy_stateful". Defaults to `None`.
           **kwargs: other keyword arguments that will be passed to the parent
             *class
         """

keras/engine/base_layer_utils.py

@@ -98,8 +98,8 @@ def make_variable(
         or "non_trainable_variables" (e.g. BatchNorm mean, stddev).
         Note, if the current variable scope is marked as non-trainable
         then this parameter is ignored and any added variables are also
-        marked as non-trainable. `trainable` defaults to `True` unless
-        `synchronization` is set to `ON_READ`.
+        marked as non-trainable. `trainable` becomes `True` unless
+        `synchronization` is set to `ON_READ`. Defaults to `None`.
       caching_device: Passed to `tf.Variable`.
       validate_shape: Passed to `tf.Variable`.
       constraint: Constraint instance (callable).

keras/engine/base_layer_v1.py

@@ -237,7 +237,7 @@ def __init__(
 
         # Whether the layer will track any layers that are set as attribute on
         # itself as sub-layers, the weights from the sub-layers will be included
-        # in the parent layer's variables() as well.  Default to True, which
+        # in the parent layer's variables() as well.  Defaults to `True`, which
         # means auto tracking is turned on. Certain subclass might want to turn
         # it off, like the Sequential model.
         self._auto_track_sub_layers = True

keras/engine/base_preprocessing_layer.py

@@ -140,14 +140,14 @@ def compile(self, run_eagerly=None, steps_per_execution=None):
         """Configures the layer for `adapt`.
 
         Arguments:
-          run_eagerly: Bool. Defaults to `False`. If `True`, this `Model`'s
+          run_eagerly: Bool. If `True`, this `Model`'s
             logic will not be wrapped in a `tf.function`. Recommended to leave
             this as `None` unless your `Model` cannot be run inside a
-            `tf.function`.
-          steps_per_execution: Int. Defaults to 1. The number of batches to run
+            `tf.function`. Defaults to `False`.
+          steps_per_execution: Int. The number of batches to run
             during each `tf.function` call. Running multiple batches inside a
             single `tf.function` call can greatly improve performance on TPUs or
-            small models with a large Python overhead.
+            small models with a large Python overhead. Defaults to `1`.
         """
         if steps_per_execution is None:
             steps_per_execution = 1

keras/engine/data_adapter.py

@@ -268,7 +268,7 @@ def __init__(
         _check_data_cardinality(inputs)
 
         # If batch_size is not passed but steps is, calculate from the input
-        # data.  Default to 32 for backwards compat.
+        # data.  Defaults to `32` for backwards compatibility.
         if not batch_size:
             batch_size = int(math.ceil(num_samples / steps)) if steps else 32
 
@@ -645,7 +645,7 @@ def __init__(
             dataset = dataset.shuffle(num_samples)
 
         # If batch_size is not passed but steps is, calculate from the input
-        # data.  Default to 32 for backwards compatibility.
+        # data.  Defaults to `32` for backwards compatibility.
         if not batch_size:
             batch_size = int(math.ceil(num_samples / steps)) if steps else 32
 

keras/engine/functional.py

@@ -1647,8 +1647,8 @@ def __init__(self, module, method_name=None, **kwargs):
         Args:
           module: The `tf.Module` instance to be wrapped.
           method_name: (Optional) str. The name of the method to use as the
-            forward pass of the module. If not set, defaults to '__call__' if
-            defined, or 'call'.
+            forward pass of the module. If not set, becomes '__call__' if
+            defined, or 'call'. Defaults to `None`.
           **kwargs: Additional keywrod arguments. See `tf.keras.layers.Layer`.
 
         Raises:

keras/engine/input_layer.py

@@ -88,12 +88,12 @@ class InputLayer(base_layer.Layer):
             will use the `tf.TypeSpec` of this tensor rather
             than creating a new placeholder tensor.
         sparse: Boolean, whether the placeholder created is meant to be sparse.
-            Default to `False`.
+            Defaults to `False`.
         ragged: Boolean, whether the placeholder created is meant to be ragged.
             In this case, values of `None` in the `shape` argument represent
             ragged dimensions. For more information about `tf.RaggedTensor`, see
             [this guide](https://www.tensorflow.org/guide/ragged_tensor).
-            Default to `False`.
+            Defaults to `False`.
         type_spec: A `tf.TypeSpec` object to create Input from. This
             `tf.TypeSpec` represents the entire batch. When provided, all other
             args except name must be `None`.

keras/engine/training.py

@@ -673,12 +673,13 @@ def compile(
               coefficients.
             weighted_metrics: List of metrics to be evaluated and weighted by
               `sample_weight` or `class_weight` during training and testing.
-            run_eagerly: Bool. Defaults to `False`. If `True`, this `Model`'s
-              logic will not be wrapped in a `tf.function`. Recommended to leave
-              this as `None` unless your `Model` cannot be run inside a
-              `tf.function`. `run_eagerly=True` is not supported when using
-              `tf.distribute.experimental.ParameterServerStrategy`.
-            steps_per_execution: Int. Defaults to 1. The number of batches to
+            run_eagerly: Bool. If `True`, this `Model`'s logic will not be
+              wrapped in a `tf.function`. Recommended to leave this as `None`
+              unless your `Model` cannot be run inside a `tf.function`.
+              `run_eagerly=True` is not supported when using
+              `tf.distribute.experimental.ParameterServerStrategy`. Defaults to
+               `False`.
+            steps_per_execution: Int. The number of batches to
               run during each `tf.function` call. Running multiple batches
               inside a single `tf.function` call can greatly improve performance
               on TPUs or small models with a large Python overhead. At most, one
@@ -687,7 +688,7 @@ def compile(
               the size of the epoch. Note that if `steps_per_execution` is set
               to `N`, `Callback.on_batch_begin` and `Callback.on_batch_end`
               methods will only be called every `N` batches (i.e. before/after
-              each `tf.function` execution).
+              each `tf.function` execution). Defaults to `1`.
             jit_compile: If `True`, compile the model training step with XLA.
               [XLA](https://www.tensorflow.org/xla) is an optimizing compiler
               for machine learning.
@@ -708,9 +709,10 @@ def compile(
               not process the same data. The number of shards should be at least
               the number of workers for good performance. A value of 'auto'
               turns on exact evaluation and uses a heuristic for the number of
-              shards based on the number of workers. Defaults to 0, meaning no
+              shards based on the number of workers. 0, meaning no
               visitation guarantee is provided. NOTE: Custom implementations of
               `Model.test_step` will be ignored when doing exact evaluation.
+              Defaults to `0`.
             **kwargs: Arguments supported for backwards compatibility only.
         """
         if jit_compile and not tf_utils.can_jit_compile(warn=True):
@@ -1457,11 +1459,11 @@ def fit(
                 of index `epochs` is reached.
             verbose: 'auto', 0, 1, or 2. Verbosity mode.
                 0 = silent, 1 = progress bar, 2 = one line per epoch.
-                'auto' defaults to 1 for most cases, but 2 when used with
+                'auto' becomes 1 for most cases, but 2 when used with
                 `ParameterServerStrategy`. Note that the progress bar is not
                 particularly useful when logged to a file, so verbose=2 is
                 recommended when not running interactively (eg, in a production
-                environment).
+                environment). Defaults to 'auto'.
             callbacks: List of `keras.callbacks.Callback` instances.
                 List of callbacks to apply during training.
                 See `tf.keras.callbacks`. Note
@@ -2059,11 +2061,11 @@ def evaluate(
               they generate batches).
             verbose: `"auto"`, 0, 1, or 2. Verbosity mode.
                 0 = silent, 1 = progress bar, 2 = single line.
-                `"auto"` defaults to 1 for most cases, and to 2 when used with
+                `"auto"` becomes 1 for most cases, and to 2 when used with
                 `ParameterServerStrategy`. Note that the progress bar is not
                 particularly useful when logged to a file, so `verbose=2` is
                 recommended when not running interactively (e.g. in a production
-                environment).
+                environment). Defaults to 'auto'.
             sample_weight: Optional Numpy array of weights for the test samples,
               used for weighting the loss function. You can either pass a flat
               (1D) Numpy array with the same length as the input samples
@@ -2419,11 +2421,11 @@ def predict(
                 (since they generate batches).
             verbose: `"auto"`, 0, 1, or 2. Verbosity mode.
                 0 = silent, 1 = progress bar, 2 = single line.
-                `"auto"` defaults to 1 for most cases, and to 2 when used with
+                `"auto"` becomes 1 for most cases, and to 2 when used with
                 `ParameterServerStrategy`. Note that the progress bar is not
                 particularly useful when logged to a file, so `verbose=2` is
                 recommended when not running interactively (e.g. in a production
-                environment).
+                environment). Defaults to 'auto'.
             steps: Total number of steps (batches of samples)
                 before declaring the prediction round finished.
                 Ignored with the default value of `None`. If x is a `tf.data`
@@ -2958,7 +2960,7 @@ def save(self, filepath, overwrite=True, save_format=None, **kwargs):
         SavedModel format arguments:
             include_optimizer: Only applied to SavedModel and legacy HDF5
                 formats. If False, do not save the optimizer state.
-                Defaults to True.
+                Defaults to `True`.
             signatures: Only applies to SavedModel format. Signatures to save
                 with the SavedModel. See the `signatures` argument in
                 `tf.saved_model.save` for details.
@@ -3051,7 +3053,7 @@ def save_weights(
                 target location, or provide the user with a manual prompt.
             save_format: Either 'tf' or 'h5'. A `filepath` ending in '.h5' or
                 '.keras' will default to HDF5 if `save_format` is `None`.
-                Otherwise `None` defaults to 'tf'.
+                Otherwise, `None` becomes 'tf'. Defaults to `None`.
             options: Optional `tf.train.CheckpointOptions` object that specifies
                 options for saving weights.
 
@@ -3366,17 +3368,17 @@ def summary(
                 (e.g. set this to adapt the display to different
                 terminal window sizes).
             positions: Relative or absolute positions of log elements
-                in each line. If not provided,
-                defaults to `[0.3, 0.6, 0.70, 1.]`
+                in each line. If not provided, becomes
+                `[0.3, 0.6, 0.70, 1.]`. Defaults to `None`.
             print_fn: Print function to use. By default, prints to `stdout`.
                 If `stdout` doesn't work in your environment, change to `print`.
                 It will be called on each line of the summary.
                 You can set it to a custom function
                 in order to capture the string summary.
             expand_nested: Whether to expand the nested models.
-                If not provided, defaults to `False`.
+                Defaults to `False`.
             show_trainable: Whether to show if a layer is trainable.
-                If not provided, defaults to `False`.
+                Defaults to `False`.
             layer_range: a list or tuple of 2 strings,
                 which is the starting layer name and ending layer name
                 (both inclusive) indicating the range of layers to be printed
@@ -3942,7 +3944,8 @@ def _get_compile_args(self, user_metrics=True):
 
         Args:
           user_metrics: Whether to return user-supplied metrics or `Metric`
-            objects. Defaults to returning the user-supplied metrics.
+            objects. If True, returns the user-supplied metrics.
+            Defaults to `True`.
 
         Returns:
           Dictionary of arguments that were used when compiling the model.
@@ -4186,11 +4189,11 @@ def _get_verbosity(verbose, distribute_strategy):
             distribute_strategy._should_use_with_coordinator
             or not io_utils.is_interactive_logging_enabled()
         ):
-            # Default to epoch-level logging for PSStrategy or using absl
+            # Defaults to epoch-level logging for PSStrategy or using absl
             # logging.
             return 2
         else:
-            return 1  # Default to batch-level logging otherwise.
+            return 1  # Defaults to batch-level logging otherwise.
     return verbose
 
 

keras/engine/training_v1.py

@@ -269,10 +269,10 @@ def compile(
                 output names (strings) to scalar coefficients.
             sample_weight_mode: If you need to do timestep-wise
                 sample weighting (2D weights), set this to `"temporal"`.
-                `None` defaults to sample-wise weights (1D).
+                `None` becomes sample-wise weights (1D).
                 If the model has multiple outputs, you can use a different
                 `sample_weight_mode` on each output by passing a
-                dictionary or a list of modes.
+                dictionary or a list of modes. Defaults to `None`.
             weighted_metrics: List of metrics to be evaluated and weighted
                 by sample_weight or class_weight during training and testing.
             target_tensors: By default, Keras will create placeholders for the