Source code for spinn_utilities.classproperty
# Copyright (c) 2018 The University of Manchester
#
# 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
#
# https://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.
class _ClassPropertyDescriptor(object):
"""
A class to handle the management of class properties.
"""
def __init__(self, fget):
self.fget = fget
def __get__(self, obj, klass=None):
if klass is None:
klass = type(obj)
return self.fget.__get__(obj, klass)()
[docs]def classproperty(func):
"""
Defines a property at the class-level.
Usage::
class C(object):
_my_property = "Value"
@classproperty
def my_property(cls):
return cls._my_property
"""
if not isinstance(func, (classmethod, staticmethod)):
func = classmethod(func)
return _ClassPropertyDescriptor(func)