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Slightly more defensive handling of type for backbone #1703

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merged 1 commit into from
Jul 20, 2024
Merged

Slightly more defensive handling of type for backbone #1703

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21 changes: 12 additions & 9 deletions keras_nlp/src/models/backbone.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,14 +76,14 @@ def __init__(self, *args, dtype=None, **kwargs):
id(layer) for layer in self._flatten_layers()
)
self._initialized = True
# Before Keras 3.2, there is no `keras.dtype_policies.get`.
if hasattr(keras.dtype_policies, "get"):
self.dtype_policy = keras.dtype_policies.get(dtype)
else:
if isinstance(dtype, keras.dtype_policies.DTypePolicy):
dtype = dtype.name
dtype = dtype or keras.config.dtype_policy().name
self.dtype_policy = keras.dtype_policies.DTypePolicy(dtype)
if dtype is not None:
try:
self.dtype_policy = keras.dtype_policies.get(dtype)
# Before Keras 3.2, there is no `keras.dtype_policies.get`.
except AttributeError:
if isinstance(dtype, keras.DTypePolicy):
dtype = dtype.name
self.dtype_policy = keras.DTypePolicy(dtype)

def __setattr__(self, name, value):
# Work around setattr issues for Keras 2 and Keras 3 torch backend.
Expand Down Expand Up @@ -121,7 +121,7 @@ def get_config(self):
}

# Add quantization support by utilizing `DTypePolicyMap`
if hasattr(keras.dtype_policies, "DTypePolicyMap"):
try:
if isinstance(
self.dtype_policy, keras.dtype_policies.DTypePolicyMap
):
Expand All @@ -133,6 +133,9 @@ def get_config(self):
policy_map[layer.path] = layer.dtype_policy
if len(policy_map) > 0:
config.update({"dtype": policy_map})
# Before Keras 3.2, there is no `keras.dtype_policies.get`.
except AttributeError:
pass
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I was wondering why we don't handle this case like the first one using keras.DTypePolicy(dtype).

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nvm, I just noticed they are completely different cases!

return config

@classmethod
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