On Nov 3, 2010, at 1:04 PM, James Y Knight 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.
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