[issue6784] byte/unicode pickle incompatibilities between python2 and and python3

Antoine Pitrou report at bugs.python.org
Thu Aug 27 15:53:42 CEST 2009

Antoine Pitrou <pitrou at free.fr> added the comment:

The problem with trying to solve the following issue:
   "a bytes instance from python3 is pickled as custom class in
protocols <3"
is that if we pickle bytes from Python 3 as a 2.x str in protocol <= 2,
unpickling it using Python 3 will yield a str (unicode), not a bytes
object. Therefore the whole chain (pickling then unpickling) will not be

components: +Library (Lib) -None
nosy: +alexandre.vassalotti, gvanrossum, pitrou
versions: +Python 2.7, Python 3.2

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