Untitled

Create per-instance property descriptor?
class MyClass(object):
  def __init__(self, **kwargs):
    for attr, val in kwargs.items():
      self.__dict__[attr] = MyDescriptor(val)

tv = MyClass(type="tv", size="30")
smartphone = MyClass(type="phone", os="android")

tv.size   # do something smart with the descriptor

<property at 0x4067cf0>

class Descriptor:

    def __get__(...):
        # this is called when the value is got

    def __set__(...
    def __del__(...

obj.attr
=> type(obj).__getattribute__(obj, 'attr') is called
=> obj.__dict__['attr'] is returned if there else:
=> type(obj).__dict__['attr'] is looked up
if this contains a descriptor object then this is used.