[Python-Dev] Pickle alternative in stdlib (Was: On breaking modules into packages) (original) (raw)

Guido van Rossum guido at python.org
Thu Nov 4 15:51:17 CET 2010

On Wed, Nov 3, 2010 at 9:08 PM, Glyph Lefkowitz <glyph at twistedmatrix.com> wrote:

This is the strongest reason why I recommend to everyone I know that they not use pickle for storage they'd like to keep working after upgrades [not just of stdlib, but other 3rd party software or their own software]. :)

+1. Twisted actually tried to preserve pickle compatibility in the bad old days, but it was impossible.  Pickles should never really be saved to disk unless they contain nothing but lists, ints, strings, and dicts.

But that set of types can safely be marshalled using the marshal module...

-- --Guido van Rossum (python.org/~guido)

More information about the Python-Dev mailing list