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Deprecate set_learning_phase() backend utility.

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Deprecating the getter (`learning_phase()`) can't be done at this time because it is used in all core layers. Changing it in the core layers requires changing the default value of the `training` arg in their call methods, which is not a backwards compatible change.

PiperOrigin-RevId: 311031244
Change-Id: Ic956a502a83e8bd3f98834ec39c1b55920d91779
This commit is contained in:
Francois Chollet 2020-05-11 17:47:12 -07:00 committed by TensorFlower Gardener
parent 5aefa24d78
commit 775d6b6497
1 changed files with 3 additions and 0 deletions
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tensorflow/python/keras/backend.py
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@ -393,6 +393,9 @@ def _default_learning_phase():
False, shape=(), name='keras_learning_phase')
@deprecated('2020-10-11',
'Simply pass a True/False value to the `training` argument '
'of the `__call__` method of your layer or model.')
@keras_export('keras.backend.set_learning_phase')
def set_learning_phase(value):
"""Sets the learning phase to a fixed value.