On Mon, 26 Dec 2016 10:51:41 -0600 "'Terry Brown' via leo-editor" <leo-editor@googlegroups.com> wrote:
[snip] > I think I need to poke around a bit more to confirm that it is changes > in the association of c.db with the same outline between versions of > Python that's driving this problem, and if so see if anything can be > done about it. I think we were both basically on track, although the exact problem is a bit simpler than Py 2/3 having different file paths or hashes thereof for a particular file. It's this line: https://github.com/leo-editor/leo-editor/blob/4d28c69/leo/core/leoCache.py#L405 c.db values are always written with the highest available pickle protocol, which is 2 in Python 2 and 4 in Python 3. Python 3's default is 3. So in Python 2 Leo fails to decode the *value* and reports it as a *key* error. Or silently fails in bookmarks.py's case. So the solution would be a hard coded constant of 2 in place of pickle.HIGHEST_PROTOCOL there. Differences in protocols are explained here: https://docs.python.org/3/library/pickle.html#data-stream-format I've made this change to prevent the problem going forward: https://github.com/leo-editor/leo-editor/commit/0cf4999 But there's nothing that can be done to fix it retrospectively, Python 2 can't depickle protocols higher than 2, which is what Python 3 wrote. So the problem only affects people using 3, then going back to 2, but that's probably not uncommon for various reasons. Cheers -Terry -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To post to this group, send email to leo-editor@googlegroups.com. Visit this group at https://groups.google.com/group/leo-editor. For more options, visit https://groups.google.com/d/optout.
