[pyar] Problemas de memory leak

[Roberto Alsina]

Tengo un reporte de bug en rst2pdf de que pierde memoria. Acá esta:

http://code.google.com/p/rst2pdf/issues/detail?id=343

Pero lo basico es esto:

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    class default_object(dict):
        ''' By default, RSON objects are dictionaries that
            allow attribute access to their existing contents.
        '''
        def __init__(self):
            self.__dict__ = self

The problem is that since dict is implemented in C, if there's a circular 
reference to itself, the object would not get garbage collected.

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Que me sugieren?