Exception classes with properties

[Gus Tabares]

Hello all,

I'm curious as to whether or not this is supported. I want to be able
to have an exception class that has properties. It seems as though
subclassing both Exception and object does not work. Like in the
following code:

class TestExcn(Exception, object):
    
    def __init__(self, id = 'test_id'):
        self.args = [id]

    def set_id(self, id):
        self.args[0] = id

    def get_id(self):
        print "Test"
        return self.args[0]

    id = property(get_id, set_id)

If I instantiate this class and try to raise the instance, I get a
TypeError. Is it possible to have an exception class with properties?