79 lines
2.3 KiB
Python
79 lines
2.3 KiB
Python
# Copyright 2018 The TensorFlow Authors. All Rights Reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
# ==============================================================================
|
|
"""Utilities for serializing Python objects."""
|
|
|
|
import numpy as np
|
|
import wrapt
|
|
|
|
from tensorflow.python.framework import dtypes
|
|
from tensorflow.python.framework import tensor_shape
|
|
from tensorflow.python.util.compat import collections_abc
|
|
|
|
|
|
def get_json_type(obj):
|
|
"""Serializes any object to a JSON-serializable structure.
|
|
|
|
Args:
|
|
obj: the object to serialize
|
|
|
|
Returns:
|
|
JSON-serializable structure representing `obj`.
|
|
|
|
Raises:
|
|
TypeError: if `obj` cannot be serialized.
|
|
"""
|
|
# if obj is a serializable Keras class instance
|
|
# e.g. optimizer, layer
|
|
if hasattr(obj, 'get_config'):
|
|
return {'class_name': obj.__class__.__name__, 'config': obj.get_config()}
|
|
|
|
# if obj is any numpy type
|
|
if type(obj).__module__ == np.__name__:
|
|
if isinstance(obj, np.ndarray):
|
|
return obj.tolist()
|
|
else:
|
|
return obj.item()
|
|
|
|
# misc functions (e.g. loss function)
|
|
if callable(obj):
|
|
return obj.__name__
|
|
|
|
# if obj is a python 'type'
|
|
if type(obj).__name__ == type.__name__:
|
|
return obj.__name__
|
|
|
|
if isinstance(obj, tensor_shape.Dimension):
|
|
return obj.value
|
|
|
|
if isinstance(obj, tensor_shape.TensorShape):
|
|
return obj.as_list()
|
|
|
|
if isinstance(obj, dtypes.DType):
|
|
return obj.name
|
|
|
|
if isinstance(obj, collections_abc.Mapping):
|
|
return dict(obj)
|
|
|
|
if obj is Ellipsis:
|
|
return {'class_name': '__ellipsis__'}
|
|
|
|
if isinstance(obj, wrapt.ObjectProxy):
|
|
return obj.__wrapped__
|
|
|
|
raise TypeError(f'Object {obj} is not JSON-serializable. You may implement '
|
|
'a `get_config()` method on the class '
|
|
'(returning a JSON-serializable dictionary) to make it '
|
|
'serializable.')
|