Subclassing a read-only class

[Jason Orendorff]

Gerhard Häring wrote:
> I'm pretty sure there is a solution, probably with a proxy object.

You are exactly correct.  The basic pattern is like this:

class Proxy:
    def __init__(self, obj):
        self.__obj = obj
    def __getattr__(self, name):
        return getattr(self.__obj, name)
    def __setattr__(self, name, value):
        setattr(self.__obj, name, value)

    ... your extra methods here ...

## Jason Orendorff    http://www.jorendorff.com/