Multiple instances and wrong parental links

[Josh English]

I have hit yet another wall. I am dynamically creating a class and then creating instances of that class. The class relies on a second class to store a list of objects. (This is simplified from the the original by a factor of about 20. The real program is trying to create a Python object around an XML definition object.)

Here's the code:

## OPTION ONE for class: ElementList
### Not really a list, but a wrapper that behaves like a list
class ElementList(object):
    def __init__(self, parent, name):
        self._parent = parent
        self._name = name

def MakeWrapper(checker, _addNameAsAttribute = False ):

    ## OPTION TWO for class: ElementList
    class Wrap(object):

        ## OPTION THREE for class: Elementlist

        def __init__(self, name):
            self._name = name
            setattr(Wrap, 'stuff', ElementList(self, 'test'))

    Wrap.__name__= checker.title()

    return Wrap

if __name__ == '__main__':

    Dude = MakeWrapper('Dude')
    print Dude
    d1 = Dude('Josh')
    print d1, d1.stuff

    # creating the second instance changes the behavior of the subclass
    d2 = Dude('Ben')
    print d2, d2.stuff
    print d1.stuff._parent
    print d2.stuff._parent

    #creating a third instance changes the behavior of all the subclasses
    d3 = Dude('David')
    print d3, d3.stuff
    print d1.stuff._parent, d2.stuff._parent, d3.stuff._parent

## END CODE

And here is the output:

>>> 
<class '__main__.Dude'>
<__main__.Dude object at 0x00DFB930> <__main__.ElementList object at 0x00DFB950>
<__main__.Dude object at 0x00DFB730> <__main__.ElementList object at 0x00DFB770>
<__main__.Dude object at 0x00DFB730>
<__main__.Dude object at 0x00DFB730>
<__main__.Dude object at 0x00DFB870> <__main__.ElementList object at 0x00DFB9B0>
<__main__.Dude object at 0x00DFB870> <__main__.Dude object at 0x00DFB870> <__main__.Dude object at 0x00DFB870>

The 'stuff' attribute is an ElementList object linked back to the parent instance, but every time I create an instance, every instance's 'stuff' links back to the last instance created.

I'm not sure why this is happening, or how to prevent it.

Any suggestions?