[Zope] I get an error when calling "parent.__init__(self)"

[Max Møller Rasmussen]

I have a class, which contains the logic of a product.

class msgList:
    
    def __init__(self):
        self.msgDict = {}
        self._newId  = 0

Then I have another class which takes care of the more Zope related tasks.

class mxm_Discuss(SimpleItem.SimpleItem, msgList):

    def __init__(self, id, title):
        "Inits the product with default values"
        self.id = id
        self.title = title
        msgList.__init__(self)  <-------- Line 22

But when I try to instantiate it in Zope I get an error:

"Error Type: TypeError
Error Value: unbound method __init__() must be called with instance as first
argument"

Usually this error comes when I forget 'self' in a method. I cannot see what
causes it here though.

Has anybody got a clue? It's probably something simple I have overlooked.

regards Max M

Traceback (innermost last):
  File C:\zope\zope240\lib\python\ZPublisher\Publish.py, line 223, in
publish_module
  File C:\zope\zope240\lib\python\ZPublisher\Publish.py, line 187, in
publish
  File C:\zope\zope240\lib\python\Zope\__init__.py, line 226, in
zpublisher_exception_hook
  File C:\zope\zope240\lib\python\ZPublisher\Publish.py, line 171, in
publish
  File C:\zope\zope240\lib\python\ZPublisher\mapply.py, line 160, in mapply
    (Object: manage_addmxm_DiscussAction)
  File C:\zope\zope240\lib\python\ZPublisher\Publish.py, line 112, in
call_object
    (Object: manage_addmxm_DiscussAction)
  File C:\zope\zope240\lib\python\Products\mxm_Discuss\mxm_Discuss.py, line
43, in manage_addmxm_DiscussAction
  File C:\zope\zope240\lib\python\Products\mxm_Discuss\mxm_Discuss.py, line
22, in __init__
    (Object: mxm_discuss)
TypeError: (see above)


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