CodePlex Issue #29192 Plain Text Attachments

test-instance.py

class Desc(object):
    def __init__(self, key):
        self.key = key
    
    def __get__(self, instance, owner):
        print "__get__ (%s): instance='%s'; owner='%s'" % (self.key, instance, owner)
        return self
    
    def __set__(self, instance, value):
        print "__set__ (%s): instance='%s'; value='%s'" % (self.key, instance, value)
        self.key = value.key
    
    def __repr__(self):
        return "<Desc(%s)>" % self.key

class Foo(object):
    content_type = Desc("1")

class Bar(Foo):
    pass

setattr(Bar, "content_type", Desc("2"))

print "Key:", Bar.content_type