75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
|
# Copyright 2015 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.
|
||
|
|
# ==============================================================================
|
||
|
|
|
||
|
|
"""A module providing a function for serializing JSON values with Infinity.
|
||
|
|
|
||
|
|
Python provides no way to override how json.dumps serializes
|
||
|
|
Infinity/-Infinity/NaN; if allow_nan is true, it encodes them as
|
||
|
|
Infinity/-Infinity/NaN, in violation of the JSON spec and in violation of what
|
||
|
|
JSON.parse accepts. If it's false, it throws a ValueError, Neither subclassing
|
||
|
|
JSONEncoder nor passing a function in the |default| keyword argument overrides
|
||
|
|
this.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from __future__ import absolute_import
|
||
|
|
from __future__ import division
|
||
|
|
from __future__ import print_function
|
||
|
|
|
||
|
|
import math
|
||
|
|
|
||
|
|
import tensorflow as tf
|
||
|
|
|
||
|
|
|
||
|
|
_INFINITY = float('inf')
|
||
|
|
_NEGATIVE_INFINITY = float('-inf')
|
||
|
|
|
||
|
|
|
||
|
|
def Cleanse(obj, encoding='utf-8'):
|
||
|
|
"""Makes Python object appropriate for JSON serialization.
|
||
|
|
|
||
|
|
- Replaces instances of Infinity/-Infinity/NaN with strings.
|
||
|
|
- Turns byte strings into unicode strings.
|
||
|
|
- Turns sets into sorted lists.
|
||
|
|
- Turns tuples into lists.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
obj: Python data structure.
|
||
|
|
encoding: Charset used to decode byte strings.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
Unicode JSON data structure.
|
||
|
|
"""
|
||
|
|
if isinstance(obj, int):
|
||
|
|
return obj
|
||
|
|
elif isinstance(obj, float):
|
||
|
|
if obj == _INFINITY:
|
||
|
|
return 'Infinity'
|
||
|
|
elif obj == _NEGATIVE_INFINITY:
|
||
|
|
return '-Infinity'
|
||
|
|
elif math.isnan(obj):
|
||
|
|
return 'NaN'
|
||
|
|
else:
|
||
|
|
return obj
|
||
|
|
elif isinstance(obj, bytes):
|
||
|
|
return tf.compat.as_text(obj, encoding)
|
||
|
|
elif isinstance(obj, (list, tuple)):
|
||
|
|
return [Cleanse(i, encoding) for i in obj]
|
||
|
|
elif isinstance(obj, set):
|
||
|
|
return [Cleanse(i, encoding) for i in sorted(obj)]
|
||
|
|
elif isinstance(obj, dict):
|
||
|
|
return {Cleanse(k, encoding): Cleanse(v, encoding) for k, v in obj.items()}
|
||
|
|
else:
|
||
|
|
return obj
|