Para tener un read-only @Property decorator DEBES heredar del nuevo estilo de clases "object"

gistfile1.txt

To have a 'read-only' property in a class you can make use of the @property decoration, you'll need to inherit from object when you do so to make use of the new-style classes.


Example:

>>> class A(object):
...     def __init__(self, a):
...         self.__a = a
...     @property
...     def a(self):
...         return self.__a
... 
>>> a = A('test')
>>> a.a
'test'
>>> a.a = 'pleh'
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: can't set attribute