On Tue, Feb 25, 2014 at 4:41 PM, Alexander Belopolsky <ndar...@mac.com> wrote: > > On Tue, Feb 25, 2014 at 11:29 AM, Benjamin Root <ben.r...@ou.edu> wrote: >> >> I seem to recall reading somewhere that pickles are not intended to be >> long-term archives as there is no guarantee that a pickle made in one >> version of python would work in another version, much less between different >> versions of the same (or similar) packages. > > That's not true about Python core and stdlib. Python developers strive to > maintain backward compatibility and any instance of newer python failing to > read older pickles would be considered a bug. This is even true across 2.x > / 3.x line. > > You mileage with 3rd party packages, especially 10+ years old ones may vary.
As an example of a 10+ year old project, Biopython has accidentally broken some pickled objects from older versions of Biopython. Accidental breakages aside, I personally would not use pickle for long term storage. Domain specific data formats or something simple like tabular data, or JSON seems safer. Peter _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
