Guido van Rossum writes: > Oops, I was indeed confused. I think I meant this: > > def keys(self): > return [k for k, c in self.__dict.iteritems() if c.objptr is not NULL] Was I not clear, or am I missing something entirely? keys() needs *no* special treatment, but items() and values() do: class celldict(object): ... def keys(self): return self.__dict.keys() def items(self): return [k, c.objptr for k, c in self.__dict.iteritems() if c.objptr is not NULL] def values(self): return [c.objptr for c in self.__dict.itervalues() if c.objptr is not NULL] -Fred -- Fred L. Drake, Jr. <fdrake at acm.org> PythonLabs at Zope Corporation
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