New submission from Serhiy Storchaka <storchaka+cpyt...@gmail.com>:
The default pickle protocol is 4 now. But shelve still uses the pickle protocol 3. Shouldn't it be bumped? Shouldn't shelve use pickle.DEFAULT_PROTOCOL by default? Disadvantages: 1. This will make shelve files incompatible with Python 3.3 by default. 2. Protocol 4 adds 9 bytes of overhead in comparison with protocol 3. This can be too large for the shelve containing a lot of small objects. Maybe strip redundant frame header for small pickles? ---------- components: Library (Lib) messages: 322281 nosy: alexandre.vassalotti, lukasz.langa, serhiy.storchaka priority: normal severity: normal status: open title: Bump the default pickle protocol in shelve type: enhancement versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue34204> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
