[Python-Dev] Module renaming and pickle mechanisms (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Sun May 18 00:22:35 CEST 2008

Alexandre Vassalotti wrote:

On Sat, May 17, 2008 at 5:05 AM, M.-A. Lemburg <mal at egenix.com> wrote:

Object serialization protocols like e.g. pickle usually store the complete module path to the object class together with the object. The opposite problem exists for Python 3.0, too.

This is just one manifestation of what I consider a serious shortcoming of the pickle format for long-term storage: it ties the data to implementation details of the program.

When I brought this up earlier, various people assured me that it wasn't a problem in practice. I think we're seeing one situation here where it is a problem.

-- Greg

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