new_contents: '''blox/attributes.py
  
  Defines how Blox handles the setting of and definition of attributes
  
  Copyright (C) 2015  Timothy Edmund Crosley
  
  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.
  
  '''
  
  class Attribute(object):
      '''Defines the most basic Blok attribute object'''
      __slots__ = ('name', )
  
      def __init__(self, name):
          self.name = name
  
      def __get__(self, obj, cls):
          return obj.attributes[self.name]
  
      def __set__(self, obj, value):
          obj.attributes[self.name] = value
  
       def __delete__(self, obj):
           obj.attributes.pop(self.name, None)
  
  
  class AttributeTransform(object):
      '''Defines the base Blok attribute object'''
      __slots__ = ('to_python', 'to_html')
  
      def __init__(self, name, to_python=None, to_html=star):
          super().__init__(name)
          self.to_python = to_python
          self.to_html = to_html
  
      def __get__(self, obj, cls):
          value = super().__get__(obj, cls)
          return self.to_python(value) if self.to_python else value
  
      def __set__(self, obj, value):
          super().__set__(obj, self.to_html(value) if self.to_html else value)
  
subject: Implement delete for attributes