laywerrobot/lib/python3.6/site-packages/tensorflow/python/keras/datasets/cifar.py
2020-08-27 21:55:39 +02:00

51 lines
1.5 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.
# ==============================================================================
"""Utilities common to CIFAR10 and CIFAR100 datasets.
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import sys
from six.moves import cPickle
def load_batch(fpath, label_key='labels'):
"""Internal utility for parsing CIFAR data.
Arguments:
fpath: path the file to parse.
label_key: key for label data in the retrieve
dictionary.
Returns:
A tuple `(data, labels)`.
"""
with open(fpath, 'rb') as f:
if sys.version_info < (3,):
d = cPickle.load(f)
else:
d = cPickle.load(f, encoding='bytes')
# decode utf8
d_decoded = {}
for k, v in d.items():
d_decoded[k.decode('utf8')] = v
d = d_decoded
data = d['data']
labels = d[label_key]
data = data.reshape(data.shape[0], 3, 32, 32)
return data, labels