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# Copyright (c) 2016 Intel Corporation
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
"""A small library that contains libraries equivalent to six
This function is pending upstreaming in six.
"""
from __future__ import (
absolute_import, division, print_function, unicode_literals
)
import six
def python_2_bool_compatible(class_):
"""A decorator to fix __bool__/__nonzero__ name changes."""
if six.PY2:
try:
class_.__nonzero__ = class_.__bool__
except AttributeError:
raise ValueError(
"@python_2_bool_compatible cannot be applied to {} because "
"it doesn't define __bool__().".format(class_.__name__))
return class_
# Some version of six don't have this function
try:
from six import python_2_unicode_compatible
except ImportError:
def python_2_unicode_compatible(class_):
"""A decorator to fix __str/__bytes__/__unicode__ name changes."""
if six.PY2:
failed = False
try:
class_.__unicode__ = class_.__str__
except AttributeError:
failed = True
try:
class_.__str__ = class_.__bytes__
except AttributeError:
if failed:
raise ValueError(
"@python_2_unicode_compatible cannot be applied to {} "
"because it doesn't define __str__() "
"or __bytes__().".format(class_.__name__))
return class_
try:
from six import viewvalues
except ImportError:
if six.PY2:
viewvalues = lambda d: d.viewvalues()
elif six.PY3:
viewvalues = lambda d: d.values()
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