old_contents: #  Copyright 2008-2011 Nokia Siemens Networks Oyj
  #
  #  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.
  
  from weakref import WeakKeyDictionary
  
  
  class setter(object):
  
      def __init__(self, method):
          self.method = method
          self._method_value_name = '_setter_%s_value' % self.method.__name__
  
      def __get__(self, instance, owner):
          if instance is None:
              return self
          try:
              return getattr(instance, self._method_value_name)
          except KeyError:
              raise AttributeError(self.method.__name__)
  
      def __set__(self, instance, value):
          if instance is None:
              return
          setattr(instance, self._method_value_name, self.method(instance, value))
  
new_contents: #  Copyright 2008-2011 Nokia Siemens Networks Oyj
  #
  #  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.
  
  
  class setter(object):
  
      def __init__(self, method):
          self.method = method
          self._method_value_name = '_setter_%s_value' % self.method.__name__
  
      def __get__(self, instance, owner):
          if instance is None:
              return self
          try:
              return getattr(instance, self._method_value_name)
          except KeyError:
              raise AttributeError(self.method.__name__)
  
      def __set__(self, instance, value):
          if instance is None:
              return
          setattr(instance, self._method_value_name, self.method(instance, value))
  
subject: remove unused import