Save/Store whole class (or another object) in a file

Fredrik Lundh fredrik at
Wed Oct 18 16:40:10 CEST 2006

alexLIGO at wrote:

> thanks for the reply,but unfortunately this does not work with the type
> of classes I am dealing with. When trying to pickle the class I get the
> following error:
>  File "/usr/lib/python2.4/", line 76, in _reduce_ex
>     raise TypeError("a class that defines __slots__ without "
> TypeError: a class that defines __slots__ without defining __getstate__
> cannot be pickled
> So there is something missing in this class?

did you remember to read the error message before posting ?


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